IT Brain Training

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A database is a collection of information that is organized so that it can easily be accessed, managed, and updated. In one view, databases can be classified according to types of content: bibliographic, full-text, numeric, and images.


  • Introduction
  • Entity-Relationship Model
  • Relational Model
  • SQL
  • Other Relational Languages
  • Integrity Constraints
  • Relational Database Design
  • Object-Oriented Databases
  • Object-Relational Databases
  • Storage and File Structure
  • Indexing and Hashing
  • Query Processing

Database System

Computer databases typically contain aggregations of data records or files, such as sales transactions, product catalogs and inventories, and customer profiles.