Database Management System (DBMS)

361. Which query joins many dimension of tables to a fact table which contains large amount of rows and uses aggregate:

  1. IBM
  2. SQL
  3. ANSI
  4. ORACLE

Correct answer: (B)
SQL

362. Which valued facts formalize the concept of functional dependency:

  1. Single-valued
  2. Double-valued
  3. Both
  4. None

Correct answer: (A)
Single-valued

363. Which relationship model provides a starting point for identifying schemas and integrity constraints:

  1. Entity
  2. Referential
  3. Both
  4. None

Correct answer: (A)
Entity

364. FD stands for:

  1. Formal dependency
  2. Functional dependency
  3. Fact dependency
  4. Superset dependency

Correct answer: (B)
Functional dependency

365. Which is derived from mathematical theory:

  1. IBM
  2. SQL
  3. ANSI
  4. FD

Correct answer: (D)
FD

366. Which are dependent on the information of what can be stored in the relation and serve as integrity constraints:

  1. IBM
  2. SQL
  3. ANSI
  4. FD

Correct answer: (D)
FD

367. A relation state r of R that satisfies the functional dependency constraints is called ___________ of R:

  1. Legal relation state
  2. Unlegal relation state
  3. FD
  4. All of these

Correct answer: (A)
Legal relation state

368. How many various types of dependencies:

  1. 1
  2. 2
  3. 3
  4. 4

Correct answer: (C)
3

369. Which are the dependencies types:

  1. Full functional dependency
  2. Partial dependency
  3. Trivial functional dependency
  4. All of these

Correct answer: (D)
All of these

370. FDs are the types of constraints that are based on:

  1. Key
  2. Key revisited
  3. Superset key
  4. None of these

Correct answer: (A)
Key

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