Differentiate between TRUNCATE and DELETE?

Answers were Sorted based on User's Feedback



Differentiate between TRUNCATE and DELETE?..

Answer / vikas

When we use truncate data deletes permanently and can not recover.Truncate is fast because it not writes any thing in log file while perform deleting operations.

Delete is used to removed table data and it can be recover by using rollback . Delete is slow because it create log file before performing the delete operation.

Is This Answer Correct ?    0 Yes 0 No

Differentiate between TRUNCATE and DELETE?..

Answer / vikas

delete is slow because it creates log file while performing delete operations.We can recover data which is removed by using delete command by using rollback.

Truncate is fast because it does not create any log file while performing delete operation.We can not recover data which is removed by using truncate command.

Is This Answer Correct ?    0 Yes 0 No

Post New Answer

More Oracle General Interview Questions

How to Identify the previously inserted/updated records in already populated table.

0 Answers  


List out the types of joins.

0 Answers  


what is the exact diiference between DBMS and RDBMS

4 Answers   Tesco,


Can a primary key contain more than one columns?

2 Answers  


Explain view?

0 Answers  






i have a table with 1 lac of data.i want to insert this data into another table. i want every 5000 of data insert use a commit.using counter and if error is comming in the 5000 of data it rollback.

1 Answers   MasterCard,


How can we delete duplicate rows in a table?

0 Answers  


1. what is a single procedure? 2. suppose a view constructed on a query... after that in the master table a column was dropped, then what will be the status of that view? will it be invalid or something else? 3. what is mutating table error? how can you solve that problem? 4. suppose "select * from emp where empno=7788;" is running slow because of what ever the cause it is.. how can you fix it and make the execution faster? 5. will the snapshot of data will be stored in the RAM , where will ir be stored exactly. 6. how to delete 100 tables or 100000 tables' data from the schema without writing delete statement for no.of times. write an sql statement to do that job. 7. suppose a package contains so many cursors, procedures and all.. and we are using such types of procedures so many in a program. so the execution is to be stored all those packages and all to the RAM. utimately it is using many resources for each time execution. how can you reduce the time and using of resources for each execution because the query need to be run many times. how can you tune that? 8. suppose a procudere is there with specs as (a,b,c,d), all of these are IN mode only then while calling them should we pass all the 4 arguments? how to pass (b,c) only.. how ever the specs are wrote in the same order displayed in the above? 9. a function is returning a table type, how to access that function in a select statement? 10. i have a table in database A and another table in database B, how can you access the data of these two tables? write a query for that with dblinks. 11. i have two tables might have 15/20 columns in that.. i wanna send these columns(table) to the front end application for example you are using asp.net by writing a procedure. write that to perform the above job. 12. shall we create a table in the package? 13. shall we create a table in the procedure? 14. suppose i have 10 records, in that i want to select 7th record. write a query for that. cant you use rownum for this? 15. suppose my procedure has got around 20 select statements, in that some three select statements are running very slow. what will you write to detect which queries are running slowly? 16. what fields you use frequently in plan_table? 17. what is pipeline function? explain me with an example. 18. does a unique column can contain more than one null? 19. how many hints are there provided by oracle?

5 Answers   Honeywell,


What is concurrency in oracle?

0 Answers  


What is oracle datasource?

0 Answers  


What happens if the update subquery returns multiple rows?

0 Answers  


How can we find out the duplicate values in an oracle table?

0 Answers  


Categories
  • Oracle General Interview Questions Oracle General (1789)
  • Oracle DBA (Database Administration) Interview Questions Oracle DBA (Database Administration) (261)
  • Oracle Call Interface (OCI) Interview Questions Oracle Call Interface (OCI) (10)
  • Oracle Architecture Interview Questions Oracle Architecture (90)
  • Oracle Security Interview Questions Oracle Security (38)
  • Oracle Forms Reports Interview Questions Oracle Forms Reports (510)
  • Oracle Data Integrator (ODI) Interview Questions Oracle Data Integrator (ODI) (120)
  • Oracle ETL Interview Questions Oracle ETL (15)
  • Oracle RAC Interview Questions Oracle RAC (93)
  • Oracle D2K Interview Questions Oracle D2K (72)
  • Oracle AllOther Interview Questions Oracle AllOther (241)