Database Management System MCQs - Chapter 14

Schema Definition, Constraints, Queries and Views Quiz Questions and Answers PDF - 7

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Schema Definition, Constraints, Queries & Views Questions & Answers PDF Download: MCQ Quiz 7

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

A) double quotation marks

B) double vertical bar

C) single vertical bar

D) triple vertical bar

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

A) the string

B) the numeric strip

C) the precision

D) 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

A) DELETE command

B) DROP TABLE command

C) PRIMARY KEY command

D) SECONDARY KEY command

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

A) tuple and attributes

B) quantifiers and identifiers

C) predicator and indicator

D) 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

A) fixed string notation

B) triple decimal notation

C) double decimal notation

D) hexadecimal notation

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