What is the ANSI-SPARC model?

Question

The ANSI-SPARC Architecture (American National Standards Institute, Standards Planning And Requirements Committee), is an abstract design standard for a database management system (DBMS), first proposed in 1975.

What are the 3 levels in ANSI Sparc architecture?

The ANSI-SPARC database architecture is the basis of most of the modern databases. The three levels present in this architecture are Physical level, Conceptual level and External level.

What is the purpose of the ANSI-SPARC 3 schema architecture?

The three schema architecture is also called ANSI/SPARC architecture or three-level architecture. This framework is used to describe the structure of a specific database system. The three schema architecture is also used to separate the user applications and physical database.

How does the ANSI-SPARC model relate to data independence?

The ANSI-SPARC architecture can make it easier to achieve true data independence, both physical and logical. However, the two levels of mappings create an overhead during compilation or execution of a query or program, leading to inefficiencies in the DBMS.

Why is ANSI-SPARC important?

It provides internal view of physical storage of data. It deals with complex low level data structures,file structures and access methods in detail. It also deals with Data Compression and Encryption techniques,if used.

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