Database Schema and Instance

DATABASE SCHEMA

  • The Database Schema is the description of the organization or structure of a database.
  • It is specified during database design and is not expected to change frequently.

DATABASE INSTANCE

  • The collection of information stored in the database at a particular moment is called an instance of the database.
  • It is also called a database state or snapshot or the current set of occurrences in the database.

ANALOGY OF SCHEMA AND INSTANCE


Related Post

  • DATABASE LANGUAGES IN DBMS Database Languages are used to create and maintain database. Today almost all RDBMS(MySql, Oracle, Infomix, Syba ...
  • DATA INDEPENDENCE IN DBMS Data Independence is the capacity to modify a scheme definition in one level without affecting a scheme definiti ...
  • Codd's 12 rules in DBMS Codd's twelve rules are a set of thirteen rules (numbered zero to twelve) proposed by Edgar F. Codd, a pioneer of the ...
  • DBMS-TRANSACTION MANAGEMENT INTRODUCTION A transaction is a collection of logical operations which occurs in a database.It is executed as ...
  • DATABASE MODELS IN DBMS A database model is a type of data model that determines the logical structure of a database and fundamentally deter ...
Latest
Previous
Next Post »