Sawaal
3
Q:

What is the default return value of a function?

A) int B) char
C) string D) None of the above

Answer:   A) int



Explanation:

The default return value from a function is int. In other words, unless explicitly specified the default return value by compiler would be integer value from function.

Subject: Oracle Certification
Job Role: Database Administration

Commented by   at Dec 22, 2024 06:49 AM

Report abuse |  Rate this :

Commented by   at Dec 22, 2024 06:49 AM

Report abuse |  Rate this :

Commented by   at Dec 22, 2024 06:49 AM

Report abuse |  Rate this :

Commented by   at Dec 22, 2024 06:49 AM

Report abuse |  Rate this :

Commented by   at Dec 22, 2024 06:49 AM

Report abuse |  Rate this :

Commented by   at Dec 22, 2024 06:49 AM

Report abuse |  Rate this :

Commented by   at Dec 22, 2024 06:49 AM

Report abuse |  Rate this :

Commented by   at Dec 22, 2024 06:49 AM

Report abuse |  Rate this :

Commented by   at Dec 22, 2024 06:49 AM

Report abuse |  Rate this :
Related Questions
Q:

Which packages contain the JDBC classes?

A) java.sql B) java.sl
C) java.jd D) java.jdbc
 
Answer & Explanation Answer: A) java.sql

Explanation:

The Java packages which contain JDBC classes and interfaces is Java.SQL.

Report Error

View Answer Report Error Discuss

Filed Under: Oracle Certification
Job Role: Database Administration , IT Trainer , Software Architect

6 19247
Q:

Which of the following is a comparison operator in SQL?

A) LIKE B) BETWEEN
C) = D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:

LIKE, BETWEEN and = operators are used for comparison in SQL. Comparison operators test whether two expressions are the same. Comparison operators can be used on all expressions except expressions of the text, ntext, or image data types.

Report Error

View Answer Report Error Discuss

Filed Under: Oracle Certification
Exam Prep: AIEEE , Bank Exams
Job Role: Analyst , Bank Clerk

2 2174
Q:

Count function in SQL returns the number of

A) groups B) values or rows
C) columns D) distinct values
 
Answer & Explanation Answer: B) values or rows

Explanation:

Count function in SQL returns the number of values or rows.

Report Error

View Answer Report Error Discuss

Filed Under: Oracle Certification
Job Role: Database Administration , IT Trainer

3 2968
Q:

The SQL keyword(s) ________ is used with wildcards.

A) LIKE only B) IN only
C) NOT IN only D) IN and NOT IN
 
Answer & Explanation Answer: A) LIKE only

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Oracle Certification
Job Role: Database Administration , IT Trainer

2 7998
Q:

A relational database developer refers to a record as

A) a relation B) an attribute
C) a criteria D) a tuple
 
Answer & Explanation Answer: D) a tuple

Explanation:

A relational database developer refers to a record as a tuple.

Report Error

View Answer Report Error Discuss

Filed Under: Oracle Certification
Job Role: Database Administration , IT Trainer , Project Manager , Software Architect

7 12705
Q:

What is an Extension of Entity Type?

Answer

The collections of entities of a particular Entity Type are grouped together into an entity set.

Report Error

View answer Workspace Report Error Discuss

Subject: Oracle Certification
Job Role: Analyst , Database Administration , IT Trainer , Project Manager

0 1889
Q:

How many joining conditions are required to join 4 tables in SQL?

A) 1 B) 2
C) 3 D) 4
 
Answer & Explanation Answer: C) 3

Explanation:

To join 'n' tables 'n-1' conditions should be satisfied.

So to join 4 tables 3 conditions should be satisfied.

Report Error

View Answer Report Error Discuss

Filed Under: Oracle Certification
Job Role: Analyst , Database Administration , IT Trainer

5 10883
Q:

Data integrity constraints are used to

A) Ensure that duplicate records are not entered into the table B) Prevent users from changing the values stored in the table
C) Control who is allowed access to the data D) Improve the quality of data entered for a specific property like table column
 
Answer & Explanation Answer: D) Improve the quality of data entered for a specific property like table column

Explanation:

Integrity constraints are used to ensure accuracy and consistency of data in a relational database. Data integrity is handled in a relational database through the concept of referential integrity. Many types of integrity constraints play a role in referential integrity (RI).

 

Hence, Data integrity constraints are used to Improve the quality of data entered for a specific property i.e, table column.

Report Error

View Answer Report Error Discuss

Filed Under: Oracle Certification
Job Role: Analyst , Database Administration , IT Trainer

0 3079