Software Quality Assurance in software engineering

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Software Quality Assurance (SQA):-  SQA is a set of activity assuring quality in software engineering process. Altimetry result in quality in software products. It include a following activities:- Process definition & implementation Auditing  Training  SQA is a process that insure hat developed software needs & compiles with defined or standardized quality specification. SQA is an on going process with in the SDLC that routinely checks the developed software to insure its needs desired quality measured. SQA helps to insure the development of high quality software. SQA practices are implementation in most type of software development regardless of underline software development model are being used. In a border sense SQA incorporate an implement software testing methodology to test software. SQA process test for quality in each phase of development until the software is completed. SQA genially works on one or more industries standards that helps in building software quality guid
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Structure of Database Management System (DBMS)

 

 Structure of Data Base Management System:-

         The measure components of DBMS described below:-

  • Data Manager:- 
It is the central software component of the DBMS. It is some times called database control system. Main function of the data manager is to convert operation in the user queries directly via the query processor or indirectly by an application program from the user logical view to a physical file system the data manager is also responsible for interfacing with the file system. The tasks of informing constraints to maintain the consistently and integrity of the data as well as its securely are also performed by data manager backup & recovery operations are  also performed by data manager.
  • File Manager:-
It is responsible for the structure of file & managing the file space it is also responsible for location the block containing the required record.

  • Disk Manager:-
The manager is a part of operating system of the host computer & all physical input & output operation of performed by it the disk manager transfer the block or page required by the file manager.

  • Query Processor:-
  The query processor is used to interpret the online users query & convert it into an efficient users of operation in a form. Capable of being sent to the data manager for execution the query processor uses the data dictionary to find the the structure of the revolution of the database & uses this information in modified the query & preparing & optimal plan to access to database.         



 DDL Compiler:-

The DDL compiler convert the data definition statement into a set of tables. These table contains the meta data conserving the data base are in a from that can be used by component of the DBMS.  


      

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