The basic reason for Mutation error is the way that Oracle manages a read
consistent view of data. The error is encountered when a row-level trigger
accesses the same table on which it is based, w...
1) Identify the data file to be moved.2) Identify the diskgroup on to which the file has to be moved.3) Take the file offline.4) Copy the file to new diskgroup using Either RMAN or DBMS_FILE_TRANSFER....
No, more then one query can not been run on same tables becasues if osme query fire a delete operation and the other query some how update the same row then it gives some error cause it may be po...
Clustered Index:A clustered index reorders the way data is physically stored in a disc. Thats why there can be only one clustered index on the table. The leaf nodes of the index contains the data page...
Mutating triggers :I am not aware of mutating triggers in SQL Server. Per my knowledge only MySQL and Oracle throws this error. Coming back to the point, mutating trigger occurs when the table w...
No up to 3nf it is not sufficient to normilize...coz 3nf contains redundancy problem....that can be removed by BCNF...so up to BCNF it is sufficient.....
Kalpesh Patel
Jan 23rd, 2007
Third Normal Form is sufficient for most situations. But if that isn't normal enough for you.
in the task bar type (after the QMF returns your query results)-EXPORT REPORT TO filename.txt hit enter and the console will display the complete name of the data set to which your results have been e...
SQL (Transact-SQL) is a set of programming extensions from Sybase and Microsoft that add several features to the Structured Query Language (SQL) including transaction control, exception and error hand...
DBMS includes the theoretical part that how datas are stored in a table. It does not relate tables with another. While RDBMS is the procedural way that includes SQL syntaxes for relating tables with a...
M.Mahesh Kumar
Nov 24th, 2005
RDBMS is enabled nu static 2-dimensional tables. ADBMS is enabled by vector field and is n- dimensional.
component based Arc:The database building structure depends upon to the component such as Kernel level.Advantage:The accessing speed will be more than other component.
A Hash index stores key value pairs based on a pseudo randomizing function called hash functionA B+- Tree is a balanced tree whose leaves contain a sequence of key pointer pairs.- Use a hash index for point queries only. Use a B- Tree if multipoint queries or range queries are used.
Perform is purely based on executionhow we get the result, ie Time , spped etcbutexecute is purely depends on logic of how we had done the design and code,itslike the output for given input for a written logic
anand sharma
Sep 8th, 2006
what is the difference between perform and execute?
Other than those mentioned above the different indexes are1)ClusteredRequires the date to be sortedwe can create 1 clustered2)Non-Clustereddoesnt require the data to be sortedWe can create 249 non-clustered indexes
Types of IndexesThere are different types of indexes that can be created on tables in a database, all of which serve the same goal?to improve database performance by expediting data retrieval. Indexes...
There are restrictions on indexed views in SQL server such as the columns are not nullable.
Harsh Gupta
Apr 8th, 2006
Hi1) Sql Server 2000 and Oracle does have added the facility of indexed views. Prior to Sql Server 2000 indexed views were not there.2) Oracle call them as Materialized views and Sql Server 2000 call ...
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