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Database Architecture & Modeling MCQs for Exam Preparations | DBMS Objective Questions and Answers

Questions
11 The level of data abstraction which describes how the data is actually stored is :
A conceptual level
B physical level
C file level
D none of these

Answer: Option [B]
12 Collection of information stored in a database at a particular moment is :
A view
B schema
C instance
D none of the above

Answer: Option [C]
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13 The syntax of a user query is verified by :
A query optimizer
B DBA
C parser
D none of the above

Answer: Option [C]
14 A data model is :
A Used to describe structure of a database
B Set of basic operations on the database
C Both [A] and [B]
D None of the above

Answer: Option [C]
15 In a hierarchical database, a hashing function is used to locate the :
A Root
B Collisions
C Primary key
D Duplicate records

Answer: Option [A]

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