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System and method for finding and accessing database in real-time databases according to roll call

A real-time data and database technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as omissions and increased configuration errors

Inactive Publication Date: 2013-06-12
SHANDONG LUNENG SOFTWARE TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

; 2. Due to the need to configure the associated database and roll call, the risk of configuration errors increases; 3. When modifying, one of the two items of modifying the configuration associated database and roll call may be omitted

Method used

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  • System and method for finding and accessing database in real-time databases according to roll call
  • System and method for finding and accessing database in real-time databases according to roll call

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with the accompanying drawings. Accompanying drawing is the flowchart of the present invention. .

[0019] 1. The configuration file reading module requires the user to extract the connection information of the database, and write the configuration file of the real-time database according to the format specified by the module. When the program starts, open the configuration file written by the user, read the configuration file, and extract the database Connection information, and save the connection information in the memory, so that it can be called by other modules quickly and at any time;

[0020] 2. The real-time data access module establishes a connection with the real-time database according to the configuration information provided by the configuration file reading module, and always holds the connection entity. When the user needs to visit the measurement points in a specific real-time databa...

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PUM

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Abstract

The invention relates to a system and a method for finding and accessing database in real-time databases according to roll call. The method is characterized by comprising the following steps of: after receiving a request of a user, traversing all real-time databases as required; during each traversing, transmitting known measuring points and unknown measuring points which belong to a certain real-time database to the real-time database; returning information according to the real-time database; deleting measuring points which belong to the database from the unknown measuring points; and performing a next cycle till all measuring points are read successfully or all real-time databases are traversed. The method comprises a configuration file reading module, a measuring point position storing library, a scheduling module, a real-time data access module and an error code module. Due to the adoption of the system and the method, the roll call of all databases can be searched and accessed under the condition of roll call and on the premise of not influencing the efficiency. Points in the real-time databases can be accessed according to roll call on the premise of not influencing the efficiency.

Description

technical field [0001] The invention relates to a system and method for finding and accessing databases according to roll call in multiple real-time databases. After the roll call for real-time database access is configured, the point value can be searched among multiple real-time databases. Background technique [0002] When accessing the value corresponding to the roll call in the real-time database, since a system may be associated with multiple real-time databases, when configuring roll call, you also need to configure the specific associated database. This has brought several disadvantages: one, due to the actual situation on site, the number of points to be read is huge, which brings a lot of trouble to the site developers. ; 2. Due to the need to configure the associated database and roll call, the risk of configuration errors increases; 3. When modifying, one of the two items of modifying the configuration associated database and roll call may be omitted. The above ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30
Inventor 丁书耕邢宏伟张建辉陈雷动王衡陈飞龙
Owner SHANDONG LUNENG SOFTWARE TECH
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