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Oracle SQL PLSQL Interview Questions

Questions Answers Views Company eMail

What is correlated sub-query?

7 42509

how instead of triger is helpful for mutating tables errors handlling ?

2 10630

What are the advantages of the packages

6 12141

what are the advantages of primary key over unique+notnull

7 22266

how to retrieve the top 3 salaries of the table using rownum

31 41736

what is the difference between union and union all

14 46497

What is the difference between join and union.

27 180459

declare l1 number := null; l2 number :=null; begin if l1=l2 then message('equal'); else if l1<>l2 then message('not equal'); else message('else'); end if; end if; end; What will be the output ?

7 14393

declare lowerl number:= 1; upperl number:= 3; num varchar2(10); begin for i into lowerl..upperl loop num:=num||to_char(lowerl); if i=3 then upperl:=5; end loop; message(num); What will be the output ?

3 8928

Given two tables Student(SID, Name, Course) and Level(SID, level) write the SQL statement to get the name and SID of the student who are taking course = 3 and at freshman level.

9 15903

What cursor type do you use to retrieve multiple recordsets?

17 70706

Two Methods of retrieving SQL?

7 56634

How do you optimize SQL queries ?

6 35867

How well can multiple sessions access the same data simultaneously ?

1 3505

Delete duplicate records in the emp table.

6 14790

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Oracle SQL PLSQL Interview Questions

Oracle SQL PLSQL Interview Questions (40)

Un-Answered Questions

What is connection data?

903

What are the two main string operators?

1043

Assuming one link of the Trojan horse copy-and-observe-later chain is broken. There are two other possible angles of attack by Alice: Alice logging on and attempting to read the string directly, and alice assigning a security level of sensitive to the back-pocket file. Does the reference monitor prevent these attacks?

2814

What are the different measures that are required to achieve the design for better yield?

1218

How to verify tooltip text using selenium?

1150

If you are given a choice to implement the code to either insert a record or update if already exist, which approach will you follow ?

995

How do you handle your own transaction?

998

What is negative time recording?

1005

What is the difference between full and partial repositories?

924

what's the difference between 'shaft power demand' and 'BHP' , when we consider electrical load list.

1518

What is utilization?

1099

What is a stacked bar chart?

433

Explain how to render an html page using only swing.

1447

Should I learn python or scala?

915

How to check hibernate version in spring boot?

677