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Database Systems Entrance Exam: Mock Test 45

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The DBMS Selection Operation Quiz Questions and Answers PDF (DBMS Selection Operation Quiz with Answers PDF e-Book) download Ch. 18-45 to learn Database Systems Practice Tests. Solve Query Processing MCQ with answers PDF, DBMS Selection Operation Multiple Choice Questions (MCQ Quiz) for top online computer science programs. The Database Systems Quiz App Download: Free DBMS: Selection Operation App to learn set operations, extended er features, dbms design process, dbms: selection operation test prep for online computer science engineering.

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DBMS: Selection Operation Questions and Answers PDF Download: MCQ 45

MCQ: 221

A predicate that by satisfying individual simple condition, satisfies the union of all records is called the

  1. Conjunction condition
  2. Disjunction condition
  3. Negation condition
  4. A9 condition
MCQ: 222

An entity-relationship diagram provides a graphical representation of the

  1. Context
  2. Framework
  3. Schema
  4. Modules
MCQ: 223

The database user assigns entities to a given entity set, in the type of generalization's constraints

  1. Data-defined
  2. User-defined
  3. System-defined
  4. Condition-defined
MCQ: 224

If 'A' is null for a particular tuple, then the expression result must also be null for that

  1. Expression
  2. Attribute
  3. Tuple
  4. Relation
MCQ: 225

A schema is said not to be in a desirable normal form, if its relationship sets are involving

  1. One entity set
  2. Two entity sets
  3. More than two entity sets
  4. No entity sets

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