Database file concepts

 

This introduction to i5/OS^® database files includes information about DB2 Universal Database™ for iSeries™ interfaces to database files, the types and maximum sizes of database files, and the ways of describing and protecting database files.

• DB2 Universal Database for iSeries
  DB2 Universal Database for iSeries is the integrated relational database manager on the i5/OS operating system.

• Interfaces to DB2 Universal Database for iSeries
  DB2 Universal Database for iSeries provides several independent interfaces to the database.

• Database files
  A database file is one of the several types of the system object type *FILE. A database file contains descriptions of how input data is to be presented to a program from internal storage and how output data is to be presented to internal storage from a program.

• How database files are described
  Records in database files can be described to the field or record level.

• Database data protection and monitoring
  To ensure data integrity and consistency, you can enforce either business rules or data type rules.

• Database file sizes
  Before you design and create a database file, know the maximum size allowed for the file.

 

Parent topic:

Database programming