Database Systems MCQs - Chapter 15
Introduction to SQL Multiple Choice Questions (MCQs) PDF Download - 57
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The MCQ: Any attribute that is present in the having clause without being aggregated must appear in the; "Introduction to SQL" App Download (Free) with answers: Select clause; Group by clause; Where clause; Distinct clause; to learn online certificate courses. Solve Concurrency Control Concept in DBMS Quiz Questions, download Google eBook (Free Sample) for computer software engineer online degree.
Introduction to SQL MCQs with Answers PDF Download: MCQ Quiz 57
Any attribute that is present in the having clause without being aggregated must appear in the
- Group by clause
- Select clause
- Where clause
- Distinct clause
SQL implicitly extracts the value from the single attribute of the single tuple in the relation, and returns
- True
- False
- Unknown
- Value
The symbol that can be used in the select clause to denote 'all attributes', is
- _
- ^
- &
- *
In SQL, identification of patterns are
- Complex
- Special case
- Case sensitive
- Not case sensitive
The constraint on an attribute specifies that the null value is not allowed for that attribute, is known to be
- Candidate key attribute
- Foreign key attribute
- Unique key attribute
- Not Null attribute
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Database & MySQL MCQ with Answers
- Format or data type must be specified for
- Type of constraints that specifies uniqueness of data stored in database are considered as
- Module of database management system which controls access to database stored on disk is considered as
- Kind of allocation in which file blocks contain pointer to next blocks of file is classified as
- If matching tuples are not found, kind of OUTER JOIN operation which keeps all tuples of first and second relation is classified as