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QUESTION
(a)(i) Define the term database.
(ii) How is it different from a database management system?
(b) What is the difference between an entity and an attribute?
(c) What is the difference between a data definition language (DDL) and a data manipulation language (DML)?
(d) Compare and contrast using diagrams between a hierarchical database model and a network models
(e) Give one advantage and one disadvantage of a hierarchical database model.
Ask question #MinimThe Georgia Tech Library (GTL) has approximately 16,000 members, 100,000 titles, and 250,000 volumes (an average of 2.5 copies per book). About 10 percent of the
A relation instance indicates as r is a collection of tuples for a given relational schema at a exact point of time. A relation state r of the relation schema R (A 1 ,A 2 ,.....
Do you have experts of the dbms
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1. Determine that the Checkpoints are a part of Ans: Checkpoints are a part of Recovery measures
What subschema expresses ? A subschema expresses the external view. (External schemas are called also called as subschemas)
under what condition log based recovery is feasible?
Explain the cartesian product in Database Management System
Mixed fragmentation: Sometimes, horizontal fragmentation or vertical fragmentation of a database schema by itself is insufficient to sufficiently distribute the data for some appli
Explain Clustering file organization (i) Determine if a record of file is physically ordered on a nonkey field - that does not comprise a different value for each record - that
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