RelationalDBJQuery

RelationalDBJQuery - ANNOUNCEMENTS Check class...

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Unformatted text preview: ANNOUNCEMENTS Check class announcements daily You must implement programming projects by yourself 1 2 RELATIONAL DATABASES Database group/collection of data that can be accessed, updated and manipulated Database model How the data is organized (defines different kinds of databases) Relational database model Data organized in relations (tables) Introduced by E.F. Codd Most popular databases based on this model Object database model Hierarchical model Network model Database Management System (DBMS) Software controlling the use of a database RDBMS Relational Database Management System 3 RELATIONAL MODEL Database is a collection of tables Each table has rows and columns A column (field) represents a particular entity (e.g., name, address, etc.) Field Types String Integer Float Enum etc. SQL (Structured Query Language) Allow us to retrieve, update, manage the database Example: select * from friends; SQL Operations selections projections joins table/Index management 4...
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This note was uploaded on 01/12/2012 for the course CMSC 122 taught by Professor Staff during the Fall '08 term at Maryland.

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RelationalDBJQuery - ANNOUNCEMENTS Check class...

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