HELP! * GREY=local LOCAL HTML version of Foils prepared July 6,1995

Foil 46 What are Schemes?

From General Discussion of Parallel Relational Databases CPS600 Spring Semester -- April 1995. by Gang Cheng Marek Podgorny (Geoffrey Fox) * See also color IMAGE
Schemes are used to define scope of different data objects to enforce data secuity and naming issues in a DBMS.
A Scheme in a DB is a logical hierarchy of data storage structures.
Major scheme objects are: users, tablespaces, tables, views, index, cluster, synonyms, columns.
Access to Different Schemes require different roles and privileges for different users.

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