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SQL PLSQL Interview Questions
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hi sql gurus, here is my question 4 u. i wanna use triggers for sending reminder mail to all users who are registered to the site. if any one knws the code plz send me ans here : chayabs3@gmail.com thnx advance

1 4002

..........refers to the disk mirroring

iFlex,

2 2591

there are .......different types of serializability

Wipro,

1 6655

What are the new features in Oracle 10g. Compared to Oracle 9i?

Polaris,

1 8364

How would you go about increasing the buffer cache hit ratio? 0. Explain the difference between a hot backup and a cold backup and the benefits associated with each 1. You have just had to restore from backup and do not have any control files. How would you go about bringing up this database? 2. How do you switch from an init.ora file to a spfile? 3. Explain the difference between a data block, an extent and a segment. 4. Give two examples of how you might determine the structure of the table DEPT. 5. Where would you look for errors from the database engine? 6. Compare and contrast TRUNCATE and DELETE for a table. 7. Give the reasoning behind using an index. 8. Give the two types of tables involved in producing a star schema and the type of data they hold. 9. What type of index should you use on a fact table? 10. Give two examples of referential integrity constraints. 11. A table is classified as a parent table and you want to drop and re-create it. How would you do this without affecting the children tables? 12. Explain the difference between ARCHIVELOG mode and NOARCHIVELOG mode and the benefits and disadvantages to each. 13. What command would you use to create a backup control file? 14. Give the stages of instance startup to a usable state where normal users may access it. 15. What column differentiates the V$ views to the GV$ views and how? 16. How would you go about generating an EXPLAIN plan?

2 4276

What does “select count(*) from tab” result?

IBM, Student, Wipro,

15 18199

What does “select count(1) from tab” result?

IBM,

9 15075

suppose we have a table in which 200 rows. i want to find 101 row ? what the query.... and how we find 4th and 5th highest salary and 1 to 10 highest salary

7 8582

I have 2 Databases. How can create a table in particular database? How can i know the list of tables presented each database?( in oracle 10g)

Relq,

5 6530

What is the default value of CHAR type?

Bosch,

3 7251

how many tupples can insert in 1 second in sql

1 4278

Describe the Index, Types of index, At what situation we have used? Which one s better than others?

IBM, TCS,

1 2042

why sql is used as interpreter frequently rather than a compile?

1 3974

I have a Employee table with columns ename,eid,salary,deptno. How to retrieve sum of salary for each deptno?

L&T,

7 11059

I have done oracle 10g. I need a project knowledge. So if u please send a project how it should be done,Or you can send email link. I will be very grateful to u.

1 2575


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Un-Answered Questions { SQL PLSQL }

How to display the current date in sql?

157


What is trigger price?

108


How many databases can sql express handle?

106


Does db2 use sql?

108


Inline the values in PL/SQL, what does it mean.?

172






what are the different type of sql's statements ? : Sql dba

137


What are different types of statements supported by sql?

150


Are subqueries faster than joins?

112


What is the primary use of normalization?

130


How we can update the view?

160


How do I add a primary key to a table?

114


What is the difference between left outer join and left join?

103


how to calculate the difference between two dates? : Sql dba

128


Explain lock escalation? : Transact sql

144


how to get @@error and @@rowcount at the same time? : Sql dba

145