CN1223948C - Data synchronizing system and method - Google Patents
Data synchronizing system and method Download PDFInfo
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- CN1223948C CN1223948C CN 02151999 CN02151999A CN1223948C CN 1223948 C CN1223948 C CN 1223948C CN 02151999 CN02151999 CN 02151999 CN 02151999 A CN02151999 A CN 02151999A CN 1223948 C CN1223948 C CN 1223948C
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Abstract
The present invention relates to a system and a method for synchronizing data in a data storage area of a mobile computer device and data in a database in a remote database server. A mobile computer device is connected with a database server by an application server. The new added and updated data in a database of the database server can be filtered by the application server. The mobile computer device comprises a connection switching module, a data processing module, a data filter and a data synchronization module. The communication connection of the mobile computer device and the database server can be switched by the connection switching module. The data filter is used for filtering the new added and updated data in a data storage area of the mobile computer device. The system can be used for reducing the time of the communication connection when data is synchronized, and the transmission amount of the data is reduced.
Description
[technical field]
The present invention relates to a kind of data synchronous system and method, refer to a kind of data and interior data synchronization system and method for remote database server that makes in the removable computer equipment especially.
[background technology]
Soon, people begin they are coupled together after the computer invention.Connection between the multiple computers can make such as public resources such as printer, memory devices and be shared.Originally, utilize cable to connect between the computer, along with the development of technology and the people increase to the dirigibility demand, also growing up appears in wireless communication mode.The wireless communication technique at initial stage relates to mobile device and is connected with periodicity between the network connection port, and this connection is to be realized by cable between removable computer equipment and network connection port or infrared signal.This Technology Need connects a cable to network connection port on mobile device, or an infrared facility is set on mobile device, and it requires, and corresponding infrared facility must be in certain scope on this infrared facility and the network connection port.Basically, early stage wireless communication technique can make between the mobile device or and other computer between in limited physical extent, carry out communication.And at 19th-century, after computer equipment can utilize emerging wireless communication networks to come communication as the mobile telephone system that engenders, the restriction of above-mentioned usable range was solved gradually.
To the 19th-century later stage, wireless network is widely used in the whole world.Removable computer equipment can carry out communication at information storage equipment or " data server " of any zone and remote computer main frame.For example, utilize communication network, a sales force uses the kneetop computer that is equipped with radio modem, can keep in touch with the central stock and the form ordering system of affiliated company.In addition, removable computer equipment such as personal digital assistant (Personal Digital Assistant, PDA) and complicated cell phone can allow the user connect to have converged the Internet of whole world resource.A lot of mobile devices also can (Public Telephone Network PTN) and/or the internet, carries out communication each other by connecting public telephone network.
Utilize present removable computer equipment, the user can be connected to e-mail server, Website server, online bank and other " backstage " application apparatus that is positioned at remote data server.Many companies, recognize by mobile device and connect they self the system or the potential advantages of server, wish to utilize telecommunication user interface and the background system that offers its staff or client, their business is expanded in the wireless world, finally provide its user to carry out trading ability with mobile device.
Though removable computer equipment has convenience, so its obstacle that still has some to use needs to eliminate.The one, wireless network between removable computer equipment and the remote data server connects may be because of other interference or apart from too far away and weaken even interrupt.The 2nd, when carrying out the mass data transmission between removable computer equipment and the remote data server, what its transmitting speed can be suitable is slow.
In addition, when removable computer equipment when an area moves to the another one area, its be connected with wireless network between the remote data server be easy to weakened.Like this, guarantee that continuing between removable computer equipment and the data server is connected to guarantee that operate as normal will become problem.When at new data more the time, the weakening that network connects may cause institute's data updated to become chaotic.And generally than the height of wired connection, if a certain user need continue to connect, the disbursement of keeping this connection may be above the profit by wireless connections produced for the expense of wireless connections.
Therefore, need a kind of system and method, when the user need be from long-range data server data download to removable computer equipment, it can be provided with communication easily and connect between data server and removable computer equipment.After having downloaded data, again can be at an easy rate removable computer equipment be connected disconnection with communication between the data server, under off-line state, the data on the removable computer equipment are operated.Can shorten the time that communication connects like this, with the internuncial weakening of avoiding being caused of communication because of the long communication tie-time.
[summary of the invention]
At above-mentioned the deficiencies in the prior art, the invention provides a kind of data synchronous system and method, it can utilize a spot of traffic can be with data in the removable computer equipment and the data sync in the remote database server.Simultaneously, the present invention also provides a kind of data synchronous system and method, and it can switch the connection status between removable computer equipment and the remote server easily in synchronizing process.
Data synchronous system provided by the invention includes: a database server, an application server and many removable computer equipment.This database server includes a database.This application server includes one first data filter, is used for that newly-increased and data updated filters out with first database.This removable computer equipment includes a data storage area, is used to store the various data that need on removable computer equipment, handle, and an application program, be used to finish the function that removable computer equipment is possessed.This application program comprises has one to connect handover module, is used to switch the communication connection status between removable computer equipment and the database server; One data processing module is used for the various data in the deal with data memory block; One second data filter is used for the newly-increased and data updated in filtering data memory block; One data simultaneous module is used for database is increased newly and data updated is downloaded to the data storage area, and newly-increased in the data storage area and data updated are uploaded to database.
The method of utilizing above-mentioned removable computer equipment, database server and application server to carry out data sync provided by the invention comprises the steps: that (a) sets up communication and be connected between removable computer equipment and application server; (b) by application server from the database of database server data download to the data storage area of removable computer equipment; (c) removable computer equipment is connected cancellation with communication between the application server; (d) handle the data that the data storage area of removable computer equipment is stored; (e) data that changed in filtered data base and the data storage area and newly-increased data; (f) rebulid removable computer equipment and be connected, and the data in the database of data in the data storage area of removable computer equipment and database server are carried out synchronously with communication between the application server.
Adopt data synchronous system provided by the present invention and method, when carrying out data sync, only transmit data division newly-increased and change, and can switch connection status between removable computer equipment and the communication network easily, therefore the time that communication connects in the data synchronization process be can shorten greatly, the internuncial weakening of communication that brought because of long-time network connection and the increase of communication fee reduced.
[description of drawings]
Fig. 1 is the calcspar of a communication system, and it can be used for implementing disclosed method.
Fig. 2 is the communication system calcspar of another embodiment of the present invention.
Fig. 3 is the home screen synoptic diagram that the present invention one is in the off-line state personal digital assistant.
Fig. 4 is the home screen synoptic diagram that the present invention one is in the connection status personal digital assistant.
Fig. 5 is the pie graph of application server and database server among Fig. 1 and Fig. 2.
Fig. 6 is the software architecture figure of personal digital assistant among the present invention.
Fig. 7 is the process flow diagram that personal digital assistant enters connection mode among the present invention.
Fig. 8 is the process flow diagram that carries out data sync among the present invention between personal digital assistant and the remote database server.
[embodiment]
As shown in Figure 1, be the hardware structure figure that supports a wireless telecommunication system of the present invention.Enterprise information system generally adopts three layers of (or multilayer) framework at present: a plurality of front station of dispersion, a series of application server, and a central database server.In the present invention, front station mainly adopts removable computer equipment, this removable computer equipment be specifically as follows personal digital assistant (PersonalDigital Assistant, PDA), kneetop computer (Laptop Computer) or smart mobile phone (Smart Phone) etc.In following the specific embodiment of the present invention, as front station the present invention is described with personal digital assistant 101.Application server 103 has comprised core and business logic mutability (planning, How It Works, management mode etc.) in the system, and its function is to receive input, handles and return results.Database server 107 is in charge of the read-write of database and maintenance, can carry out the renewal and the retrieval of mass data rapidly.
Above-mentioned communication system only is a specific embodiment of the present invention, by some other system that this system derived, or even dissimilar systems, also can adopt method of the present invention.For the people who knows field of the present invention, disclosed method can be easily launched in any communication system or other type exist the system of frequency range and/or device memory problem.The present invention is not limited only to adopt the system of wireless telecommunications connection, though the easiest the embodying of this field convenience of the present invention.
Figure 2 shows that the hardware structure figure of another line communication system of the present invention.Can adopt this framework under the situation of access to LAN easily the user, transmit effect to guarantee better data.Under the situation that adopts wire communication mode, personal digital assistant 101 inserts an Ethernet card (Ethernet Card) 119.Utilize this Ethernet card 119, but these personal digital assistant 101 access to LAN 117, and see through this LAN (Local Area Network) 117 and be connected to application server 103 and database server 107.
Fig. 3 and Fig. 4 are typical home page synoptic diagram that shows on the display screen of personal digital assistant 101 (Fig. 1 and Fig. 2).The user carries out and implements application program of the present invention, and this homepage promptly is presented on the screen.In the top of homepage is a title block 1011, has in comprising: a title " homepage ", current time " 11:47am ".Be " a welcome below the title block 1011! " message 1013, this message content is transformable.Then be several screen-icons below the message 1013, they are respectively directory icons, an order icon, account's icon, a synchronous icon.Each screen-icon is all being represented a certain specific function.Particularly, directory icon sees through the software of carrying out on the personal digital assistant makes the user can browse the products catalogue in the file of product, even can make some modification; The order icon can make the user send purchase order, or order is done some modifications; Account's icon can make the user browse or revise its account number; Synchronization icon can make the user define, redefine or change its synchronous filtering device.
Be a state area 1015 below screen-icon, comprise four options buttons such as " account number ", " order ", " catalogue ", " synchronously ", corresponding one by one with screen-icon.The user selects some keys can move corresponding software with a stylus, and this software is identical with the software that sees through the screen-icon operation.Except four options buttons corresponding to screen-icon, state area 1015 also comprises one " archives " key, similar in the function of this archives key and the Microsoft Word supervisor, and the user can carry out unlatching, close, preserves operations such as document by this key.Especially, state area 1015 also includes one and connects switching icon 1017, shows the connection status between a personal digital assistant 101 and the remote application server 103 (Fig. 1).In the specific embodiment of the present invention, icon 1017 is switched in this connection two kinds of patterns: connect and off-line.Under off-line mode, connect and switch the oblique line (as shown in Figure 3) that a redness is arranged on the icon 1017.At this moment, personal digital assistant 101 can't be visited long-range database server 107, but can handle the data in the data storage area of its local area.Under connection mode, connect the red oblique line that switches on the icon 1017 and can disappear (as shown in Figure 4).At this moment, personal digital assistant 101 can be visited long-range database server 107, as can also uploading data to the database in the database server 107 from the database data download the database server 107.
Fig. 5 is the Organization Chart of application server 103 shown in Fig. 1 and Fig. 2 and database server 107.In database server 107, include a database 1070, it can store Inventory Performance data of an enterprise etc.In application server 103, include one first data filter 1030, be used for the data that database 1070 is newly-increased or the change of data with existing and partly filter out, to carry out data sync with personal digital assistant 101.Be connected by LAN (Local Area Network) 117 between application server 103 and the database server 107.
Fig. 6 is the software architecture figure of personal digital assistant 101 shown in Fig. 1 and Fig. 2.This personal digital assistant 101 includes an application program 300 and a data storage area 310.This application program 300 is used to the function that realizes that personal digital assistant 101 is possessed.Data storage area 310 is used to store the data that store personal digital assistant 101 this locality.This application program 300 includes account's setting module 301, and connects handover module 303, a data processing module 305, one second data filter 307, a data simultaneous module 309.Account's setting module 301 is used to set the dial-up account of dial-up connection.When the user often need roam into various places, just can use local dial-up account everywhere, to save communication fee.Connect handover module 303 and be used to receive connection or the off-line instruction that the user sends, and switch the connection status between personal digital assistant 101 and the application server 103.Data processing module 305 is used for data that data memory area 310 stored to be upgraded or adds.Second data filter 307 is used for personal digital assistant 101 domestic-investment change of doing of data memory area when the off-line state is partly filtered out, the data in these data and the remote database server 107 are carried out synchronously when the connection status.If execution second data filter under connection status, then its meeting data download from database 1070.Data simultaneous module 309 is used for when personal digital assistant 101 is in connection status, and the data in the data that second data filter 307 is separated and the database 1070 of remote database server 107 are carried out synchronously.
After personal digital assistant 101 was activated, its homepage connected and switches the oblique line that a redness is arranged on the icon 1017 as shown in Figure 3.If the user wants and long-range database server 107 between connect, its utilisation point hits to connect and switches icon 1017, this personal digital assistant 101 can transfer connection status to by off-line state.Fig. 7 is this kind transformation flow figure.At first, at step S601, the user clicks to connect switches icon 1017, connects handover module 303 and can receive a link order.At step S603, connect whether handover module 303 detecting personal digital assistants 101 are current can be connected to communication network automatically according to a default default dial-up account.This process is that the action that the host name by the application server on communication network 103 is carried out " Ping " realizes." Ping " sends message and waits for a kind of agreement of inbound message to another computer, and it is generally used for checking whether another computer on the network is readable.If " Ping " is successful, then personal digital assistant 101 enters connection status automatically.If " Ping " is unsuccessful, illustrate that then current network can't connect.At this moment, can eject a dialog box on the page of personal digital assistant 101, the user can select a dial-up account to connect to carry out network in addition.At step S605, the user selects a dial-up account to connect in addition.In the specific embodiment of the present invention, provide a pull-down menu, it provides multiple default dial-up account, and the user can select according to the difference of their location.This mode is very practical for the user that those often need roam into various places, and it can reduce the increase of the communication cost that is brought because of roaming.If when an enterprise adopted distributed information system, when personal digital assistant 101 roams to another place from a place, at step S607, the user also can select a nearest application server to connect, and can improve the transmission performance of data like this.This connection procedure is the action of carrying out one " Ping " to the URL of nearest application server (Uniform Resource Locator).If adopt Java to handle, this URL includes the IP address and a Servlet title of this application server.At step S609, personal digital assistant 101 promptly enters connection mode.At this moment, the user can pass through database 1070 data download of application server 103 from remote database server 107, or uploads data to it.After synchronization job is finished, click to connect switch icon 1017, can cut off personal digital assistant 101 and be connected with communication between communication network or the application server 103.
Shown in Figure 8 is the process flow diagram of data synchronization process among the present invention.In the specific embodiment of the present invention, be that example explanation illustrates this flow process with the database server 107 of the employed personal digital assistant of a salesman of an enterprise 101 and its owned enterprise.Suppose that this personal digital assistant 101 is for using first.At first, at step S701, this salesman utilizes click to connect switching icon 1017 and sends link order to connecting handover module 303, so that its personal digital assistant 101 is connected to application server 103.At step S703, second data filter 307 is downloaded required data in the database 1070 of database server 107 to the data storage area 310 by application server 103.Such as, can in the database of the database server 107 of this enterprise, download a certain commodity, the Inventory Performance data as baseball comprise trade name, stockpile number, selling price, procurement price etc.After having downloaded required data, at step S705, this salesman's utilisation point hits and connect to switch icon 1017 and make its employed personal digital assistant 101 be connected disconnection with communication between the application server 103.At step S707, this salesman can local area to it data in employed personal digital assistant 101 carry out operation.For example work as this salesman and sell after the baseball, the stockpile number of baseballs in the data storage area 310 of its renewable this personal digital assistant 101, and increase a sales figure.Every the regular hour, such as every 24 hours, this salesman need carry out synchronization job with the data in the database 1070 of data in the data storage area 310 of its personal digital assistant 101 and enterprise database server 107.At step S709, second data filter 307 is filtered the data that increase newly or change in the data storage area 310 of personal digital assistant 101.For example, variation that the quantity of baseball in the personal digital assistant 101 is produced because of sale and newly-increased sales figure filter out.Simultaneously, first data filter 1030 also can be filtered the variation of the database 1070 interior baseball quantity of enterprise database server 107, or the data such as change of baseball selling price.At step S711, this salesman utilizes click to connect switches icon 1017 and sends link order to connecting handover module 303, is connected with communication between the application server 103 to reset personal digital assistant 101.At step S713, connect handover module 303 and send a pulse (as HTTP request) from trend application server 103, promptly carry out the action of " Ping ", available to confirm that this time communication connects.If confirm availablely, then personal digital assistant 101 is in connection mode, and connecting the red oblique line that switches on the icon 1017 can disappear automatically.If it is also unavailable that this communication connects, then be back to step S711 and reset connection.At step S715, data simultaneous module 309 partly is uploaded to the change of data in the data storage area 310 of personal digital assistant 101 in the database 1070 of long-range enterprise database server 107, and the change part of data in the database 1070 of remote enterprise database server 107 or the new data that increase downloaded, thereby make the data in the database 1070 of data in the data storage area 310 of personal digital assistant 101 and remote database server 107 reach synchronous.Because in synchronous process, have only those data that changed and newly-increased data between the database 1070 of the data storage area 310 of personal digital assistant 101 and long-range database server 107, to transmit, rather than transmit all data, and these data that are transmitted generally only account for the seldom part of all data, therefore improved the application performance of personal digital assistant 101 greatly, also save user's time, and correspondingly reduced the reportedly defeated required expense of factor.After having finished data sync, at step S717, this salesman utilisation point again hits and connect to switch icon 1017 and make its employed personal digital assistant 101 be connected disconnection with communication between network or the application server 103.Afterwards, this salesman can carry out operation on the data updated basis.
Claims (10)
1. data synchronous system is characterized in that comprising:
One database server includes one first database;
One application server includes one first data filter, is used for filtering the newly-increased and data updated of first database;
At least one removable computer equipment, it includes:
One second database is used to store the various data that need handle on removable computer equipment;
One application program is used to finish the function that removable computer equipment is possessed, and it includes:
One connects handover module, is used to receive connection and the off-line instruction that the user sends,
And the communication connection status between switching removable computer equipment and the database server;
One data processing module is used to handle the various data in second database;
One second data filter is used for filtering the newly-increased and data updated of second database;
One data simultaneous module is used for first database is increased newly and data updated is downloaded to second database, and newly-increased in second database and data updated are uploaded to first database, so that the data sync in first database and second database.
2. data synchronous system as claimed in claim 1 is characterized in that this removable computer equipment is personal digital assistant.
3. data synchronous system as claimed in claim 1 is characterized in that this removable computer equipment can utilize a modulator-demodular unit and communication network to carry out wireless telecommunications and be connected.
4. data synchronous system as claimed in claim 1 is characterized in that this removable computer equipment can utilize an Ethernet card and communication network to carry out wire communication and be connected.
5. data synchronous system as claimed in claim 1 is characterized in that this application program also includes account's setting module, is used for carrying out setting when wireless telecommunications connect different dial-up connection accounts with communication network.
6. method of data synchronization, it can make the interior data sync of second database of first database and the removable computer equipment of database server, be connected by an application server between this removable computer equipment and the database server, it is characterized in that this method comprises following step:
(a) setting up removable computer equipment is connected with communication between the application server;
(b) by this application server from first database of database server data download to second database of removable computer equipment;
(c) cutting off removable computer equipment is connected with communication between the application server;
(d) handle the data that second database of removable computer equipment is stored;
(e) filter the newly-increased data that reach change in first database and second database;
(f) rebulid removable computer equipment and be connected, and the data in first database of second database of removable computer equipment and database server are carried out synchronously with communication between the application server.
7. method of data synchronization as claimed in claim 6 is characterized in that this removable computer equipment is personal digital assistant.
8. method of data synchronization as claimed in claim 6 is characterized in that step (f) more includes following steps:
Whether (f1) send a pulse to application server connects available with the communication of determining to be set up;
(f2) available if this communication connects, it is synchronous then to carry out data;
(f3) also unavailable if this communication connects, then rebulid the mobile computer equipment and be connected with communication between the application server.
9. method of data synchronization as claimed in claim 8 is characterized in that this pulse is a HTTP request message.
10. method of data synchronization as claimed in claim 6 is characterized in that only data newly-increased in first database and second database and change being transmitted each other in the data synchronization process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02151999 CN1223948C (en) | 2002-11-15 | 2002-11-15 | Data synchronizing system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02151999 CN1223948C (en) | 2002-11-15 | 2002-11-15 | Data synchronizing system and method |
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| Publication Number | Publication Date |
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| CN1501271A CN1501271A (en) | 2004-06-02 |
| CN1223948C true CN1223948C (en) | 2005-10-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 02151999 Expired - Fee Related CN1223948C (en) | 2002-11-15 | 2002-11-15 | Data synchronizing system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101008908B (en) * | 2006-01-25 | 2010-06-23 | 联想(北京)有限公司 | Synchronous data copy system and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4596943B2 (en) * | 2005-03-24 | 2010-12-15 | 株式会社日立製作所 | Sensor network system, data transfer method and program |
| CN100352231C (en) * | 2005-04-11 | 2007-11-28 | 深圳市天路软件开发有限公司 | Synchronization transmission method and system for data between general server and terminal server |
| CN100407656C (en) * | 2005-12-09 | 2008-07-30 | 华为技术有限公司 | Method and system for managing terminal equipment |
| US7653650B2 (en) * | 2005-12-13 | 2010-01-26 | International Business Machines Corporation | Apparatus, system, and method for synchronizing change histories in enterprise applications |
| CN101640587B (en) * | 2008-08-01 | 2012-04-25 | 华为技术有限公司 | Data synchronization method and data synchronization device |
| CN101344894B (en) * | 2008-08-21 | 2012-11-07 | 峰峰集团邯郸鼎峰物流有限公司 | Method and device for data synchronization between application systems |
| US20100191565A1 (en) * | 2009-01-23 | 2010-07-29 | Hudson Marine Management Services | System and Method for Complying With TMSA Guidelines |
| CN102065137B (en) * | 2010-12-21 | 2013-08-14 | 山东浪潮齐鲁软件产业股份有限公司 | Method for synchronizing table data application programs of network databases |
| CN106156094B (en) | 2015-04-01 | 2019-09-17 | 阿里巴巴集团控股有限公司 | A kind of the teledata synchronous method and device of database |
| CN107229647A (en) * | 2016-03-25 | 2017-10-03 | 阿里巴巴集团控股有限公司 | Official documents and correspondence update method and device |
-
2002
- 2002-11-15 CN CN 02151999 patent/CN1223948C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101008908B (en) * | 2006-01-25 | 2010-06-23 | 联想(北京)有限公司 | Synchronous data copy system and method |
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| CN1501271A (en) | 2004-06-02 |
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Owner name: HONGFUJIN PRECISION INDUSTRY (SHENZHEN) CO., LTD. Free format text: FORMER OWNER: HONGFUJIN PRECISION INDUSTRY (SHENZHEN) CO., LTD.; MOLI DONGWANG SCIENCE CO., LTD. Effective date: 20080215 |
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Effective date of registration: 20080215 Address after: No. two, 2 East Ring Road, tenth Pine Industrial Zone, Longhua Town, Guangdong City, Shenzhen Province, China: 518109 Co-patentee after: Hon Hai Precision Industry Co., Ltd. Patentee after: Fujin Precision Industry (Shenzhen) Co., Ltd. Address before: No. two, 2 East Ring Road, tenth Pine Industrial Zone, Longhua Town, Guangdong City, Shenzhen Province, China: 518109 Co-patentee before: Moli Dongwang Science Co., Ltd. Patentee before: Fujin Precision Industry (Shenzhen) Co., Ltd. |
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