What is rule base and cost base optimizer?
Answers were Sorted based on User's Feedback
Answer / chandra shekher
Rule based optimiser will optimise the query based on the
rules.
Cost based optimiser will optimise the query based on the
statistics available for the table.
| Is This Answer Correct ? | 4 Yes | 1 No |
Answer / chandra bhusan prasad
one is supported in 8i and another in 9i/10g
cost base optimizer display the cost attributes of query
and it is easier.
| Is This Answer Correct ? | 1 Yes | 3 No |
What is recursive stored procedure?
What is sqlite format?
How can we store rows in PL/SQL using array?
What is a sql schema used for?
using subquery how can i calculate working days in a month?
How to run sql commands in sql*plus?
What is compiled query?
Explain what is rdbms?
I have one table,in that table (1)i have java1.1 version books are 2 and java1.5 version books are 4. (2).Net2.0 books are 3, .Net3.5 books are 2 (3)ABC1.6 books are 4, ABC2.0 books are 3. Now i want output is like Book Count Java 6 .Net 5 ABC 7 For this i need sql query, please help me if anyone how to get this result. Thanks, Seenu
what is hash join
What are the features of pl sql?
What does trigger mean in psychology?
Oracle (3259)
SQL Server (4518)
MS Access (429)
MySQL (1402)
Postgre (483)
Sybase (267)
DB Architecture (141)
DB Administration (291)
DB Development (113)
SQL PLSQL (3330)
MongoDB (502)
IBM Informix (50)
Neo4j (82)
InfluxDB (0)
Apache CouchDB (44)
Firebird (5)
Database Management (1411)
Databases AllOther (288)