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Database Systems MCQs (Computer Science) From Textbook

Database Systems MCQs – Practice Test 55 (Chapter 1)

Advanced SQL Quiz with Answers PDF Download – Test 55

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Free "Database Systems Study" App (iOS & Android) with MCQ: To eliminate the duplication of rows, the query result in SQL uses the statement; with answers: no duplicate, distinct, differentiate, and unique for database application development. Study Database Languages Quiz Questions, download Google Book (Free Chapter) for DBMS online curriculum.

Advanced SQL Quiz – Practice Test 55 PDF Download

MCQ 271: To eliminate the duplication of rows, the query result in SQL uses the statement:

  1. Distinct
  2. NO duplicate
  3. Differentiate
  4. Unique

MCQ 272: SQL statements operate on relations and returns as a result:

  1. Tuples
  2. Attribute
  3. Relation
  4. Instance

MCQ 273: Conditional statements are implemented/executed using:

  1. Functions
  2. Relations
  3. Attributes
  4. Controls

MCQ 274: The operation of all is achieved using the function of SQL, named as:

  1. encode function
  2. decode function
  3. grouping function
  4. Both B and C

MCQ 275: The process of switching from coarser-granularity data to finer-granularity data, is known as:

  1. Drill down
  2. Drill up
  3. Rollup
  4. Rolldown

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