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3
Q:

SQL views can be used to hide?

A) Complicated SQL syntax B) Rows
C) Columns D) All of the above

Answer:   D) All of the above



Explanation:

In SQL, a SQL view is a virtual table based on the result-set of an SQL statement. A view contains rows and columns, just like a real table.

 

SQL views can be used to hide rows and columns and complicated SQL syntax.

 

The fields in a view are fields from one or more real tables in the database.

Subject: SQL
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The arranging of data in a logical sequence is called

A) Summarizing B) Classifying
C) Sorting D) Rearranging
 
Answer & Explanation Answer: C) Sorting

Explanation:

The process of arranging any items in a systematic manner in a logical sequence is called as Sorting. It can be of two types :

1. Ordering

Arranging items following some criterion like ascending or descending order

2. Categorizing

Grouping items with similar properties together.

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Which SQL keyword is used to sort the result-set?

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Answer & Explanation Answer: B) ORDER BY

Explanation:

SQL keyword ORDER BY is used to sort the result-set.

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Embedded SQL is which of the following?

A) The process of making an application capable of generating specific SQL code on the fly. B) Hard-coded SQL statements in a trigger.
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Answer & Explanation Answer: C) Hard-coded SQL statements in a program language such as Java.

Explanation:
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The SQL SELECT statement is capable of

A) Projection B) Selection
C) Protection & Security D) Both A & B
 
Answer & Explanation Answer: D) Both A & B

Explanation:
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A subquery in an SQL SELECT statement is enclosed in

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Explanation:

A subquery in an SQL SELECT statement is enclosed in parenthesis (...).

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Which of the following is not a relational database?

A) 4th Dimension B) Reflex
C) dBASE IV D) FoxPro
 
Answer & Explanation Answer: B) Reflex

Explanation:
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Oracle SQL developer is an

Answer

Oracle SQL developer is an Oracle Database IDE.

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AND, OR and NOT are examples of

A) Clauses B) Boolean operators
C) Conjuctive operators D) Exclusive operators
 
Answer & Explanation Answer: B) Boolean operators

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