Royal University of Phnom Penh     ដដដដដដដដដដដ Mr Kean Tak      ដដដដដដដដដដដMember Group1. Chan Pisey2.   Chhann Seakquech3...
I.                  Content     Storing and Retrieving DataII. Manipulating Data and Generating ReportIII. Database Admini...
Storing and Retrieving DataWhen an application program request data from DBMS, the application program follows a logical ...
Logical and Physical Access Paths
Manipulating Data and           Generating Reports Data manipulation language (DML): the  commands that are used to manip...
Database Administration DBA  Works with users to decide the content of the database Works with programmers as they buil...
Popular Database Management                   SystemsPopular DBMSs for end users include Microsoft’s Access and Corel’s P...
Special-Purpose Database SystemsSome specialized database packges are used . for specific purposes or in specific industr...
Selecting a Database Management            System (continued)Important characteristics of databases to consider   Databa...
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  1. 1. Royal University of Phnom Penh ដដដដដដដដដដដ Mr Kean Tak ដដដដដដដដដដដMember Group1. Chan Pisey2. Chhann Seakquech3. Bun Seng4. Choun Mengcheng5. Bun Panha6. Choun Mengcheng7. Chheang Chhayheng8. Chea Sovathana9. Chea Vuthu
  2. 2. I. Content Storing and Retrieving DataII. Manipulating Data and Generating ReportIII. Database AdministrationIV. Popular Database Management SystemsV. Special –Purpose Database SystemsVI. Selecting a Data Management System
  3. 3. Storing and Retrieving DataWhen an application program request data from DBMS, the application program follows a logical access pathWhen the DBMS goes to a storage device to retrieve the requested data, it follows a path to the physical location (physical access path) where the data is stored
  4. 4. Logical and Physical Access Paths
  5. 5. Manipulating Data and Generating Reports Data manipulation language (DML): the commands that are used to manipulate the data in a database Structured Query Language (SQL): adopted by the American National Standards Institute (ANSI) as the standard query language for relational databasesOnce a database has been set up and loaded with data, it can produce reports, documents, and other outputs
  6. 6. Database Administration DBA  Works with users to decide the content of the database Works with programmers as they build applications to ensure that their programs comply with database management system standards and conventions Data administrator:  Responsible for defining and implementing consistent principles for a variety of data issues
  7. 7. Popular Database Management SystemsPopular DBMSs for end users include Microsoft’s Access and Corel’s Paradox The complete database management software market includes databases by IBM, Oracle, and MicrosoftExamples of open-source database systems: PostgreSQL and MySQLMany traditional database programs are now available on open-source operating systems
  8. 8. Special-Purpose Database SystemsSome specialized database packges are used . for specific purposes or in specific industries: Rex-book from UrbanspoonMorphbank(www.morphbank.net): Allows researchers to continually update and expand a library of more than 96.000 biological images
  9. 9. Selecting a Database Management System (continued)Important characteristics of databases to consider  Database size  Database Cost  Database users  Performance  Integration  Vendor
  10. 10. ដដដដដដដដ

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