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HCL SQL PLSQL Interview Questions
Questions Answers Views Company eMail

what is meant by DML?

5 8232

Which one of the following pairs of aggregate functions do you use with character fields? 1. COUNT(field) and MAX(field) 2. AVG(field) and COUNT(field) 3. MIN(field) and SUM(field) 4. AVG(field) and MAX(field) 5. COUNT(field) and SUM(field)

6 11226

Which clause of an UPDATE statement allows you to affect only certain rows of a table? 1. The WHERE clause 2. The SET clause 3. The ROWS AFFECTED clause 4. The ORDER BY clause

6 9180

If you want a column to be part of the result set, after which SQL keyword does it belong? 1. SELECT 2. FROM 3. WHERE 4. GROUP BY 5. HAVING

10 13921

Types of locks in database ?

8 70870

What is normalization ?

9 15845

What is the use of cursor ? how cursor allocate context area for executing the sql statement?

4 12455

Can a table have two primary keys?

44 71948

what is the boundary line in varrays?

1 5994

When we give SELECT * FROM EMP; How does oracle respond?

24 39661

Write one update command to update seqno field of a table on the basis of row number.

4 13836

what is indexing, searching and user interface?

1 3538

what are the differences among these table level lock modes - IN SHARE MODE, IN SHARE UPDATE MODE, IN EXCLUSIVE MODE ?

3 8561

i want to display 1 to 10 numbers using one select statement.

18 31491

what is the difference between varray and table data type..please expalain with some examples... under what situation you will go for varray..instead of index by table...

1 2433

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