Schema, Database Management System

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difference between internal schema and external schema in DBMS

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Support by Adding Indexes Multiple indexes can be used to access a data file by multiple access paths. In such a scheme only single copy of the data is consider, only the numbe

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In an E-R diagram how attributes are represented ? In an E-R diagram attributes are represented in a ellipse.

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Example: RELATIONAL SCHEMA for PERSON: PERSON (PERSON_ID: integer, NAME: string, AGE: integer, ADDRESS: String) RELATION INSTANCE In this instance, m = 3 and n = 4

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Differentiate between strict two-phase and rigorous two-phase with conversion protocol Ans:  Strict two-phase locking holds all its exclusive that is write locks until commit t

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