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Database Management System MCQs – Practice Test 7 (Chapter 14)

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Schema Definition, Constraints, Queries & Views Quiz – Practice Test 7 PDF Download

MCQ 31: The concatenation operator in SQL which can concatenate two strings is denoted as:

  1. double quotation marks
  2. double vertical bar
  3. single vertical bar
  4. triple vertical bar

MCQ 32: In the statement DECIMAL () to specify numeric data type, the number of decimal digits is called:

  1. the string
  2. the numeric strip
  3. the precision
  4. the scale

MCQ 33: Considering the change in schema statement in SQL, the command which is used to delete records of table and leave the definition of table for later use is classified as:

  1. DELETE command
  2. DROP TABLE command
  3. PRIMARY KEY command
  4. SECONDARY KEY command

MCQ 34: In standard query language, the rows and columns are called respectively:

  1. tuple and attributes
  2. quantifiers and identifiers
  3. predicator and indicator
  4. non-identifiers and quantifiers

MCQ 35: If the length of bit string is multiple of 4 then it can be specified with the notation called:

  1. fixed string notation
  2. triple decimal notation
  3. double decimal notation
  4. hexadecimal notation

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