Why the tablespaces are used in Oracle ?
tablespaces are the logical constructs which are group of datafiles. a datafile belongs to one database. in laymans language we can say that tablespaces are like folders in windows environment. as we ...
use of tableapce in oracle are:1) we can assign different quotas to the user of databasae2)we can take a part of database unavailable from the user3)we can create a object which have block size different from standard block size4) we can take backup of part of the database
What is the difference between DBMS and RDBMS ?
Answered by: RicGupta1984
View all answers by RicGupta1984
Member Since Sep-2007 |
Answered On : Mar 5th, 2008
A DBMS has to be persistent, that is it should be accessible when the program created the data ceases to exist or even the application that created the data restarted. A DBMS also has to provide some uniform methods independent of a specific application for accessing the information that is stored.RDBMS is a Relational Data Base Management System Relational DBMS. This adds the additional condition that the system supports a tabular structure for the data, with enforced relationships between the tables. This excludes the databases that don't support a tabular structure or don't enforce relationships between tables.Many DBA's think that RDBMS is a Client Server Database system but thats not the case with RDBMS.Yes you can say DBMS does not impose any constraints or security with regard to data manipulation it is user or the programmer responsibility to ensure the ACID PROPERTY of the database whereas the rdbms is more with this regard bcz rdbms difine the integrity constraint for the purpose of holding ACID PROPERTY.
DBMS has to be persistent, that is it should be accessible when the program created the data ceases to exist or even the application that created the data restarted. A DBMS also has to provide some un...
DBMS and RDBMS both are the management system instead in case of RDBMS we use foreign keys, primary keys etc. which is not possible in case of DBMS
A mans wife drives him over to howrah station every morning and picks him in the evening at 6.One day he arrived at station at 5 and starts walking home. He met his wife on the way and drove home 10 min...
the que is good but lacks data as its not clear whether wants distance or time...but if time is required then 55 min... is the answer....
Ans is 55 min. This is from Shakuntla devi's Puzzles to puzzle u.
a man hires a taxi to meet him at the railroad station at 3pm. To take him to an appointment. He catches an earlier train and arrives at 2 p.M. He decides to start walking, and is picked up in route by...
ans: none Because distance is measured in meters
What is the use of the background process dbwn in a database?
The database writer(DBWn) writes modified blocks from the database buffer cache to the datafiles. Although one database writer process (DBW0) is sufficient for most systems, you can configure addition...
How is rebuilding an index takes place and what are the important points to note in this?
When you rebuild an index, you use an existing index as the data source. Creating an index in this manner enables you to change storage characteristics or move to a new tablespace. Rebuilding an inde...
What happens in Oracle database when a commit is placed after a update statement?
this que is tricky oneu would have chosen option 1.but take care that the dirty buffers are written only when there is a checkpointsame applies for LGWRin this case server process will place the commi...
What is the advantage of using locally managed tablespaces?
In adddition to the answers given earlier.In a technology like Orcale one should always remember there is nothing absolute everything is optimum.There is nothing actual advantage of using Locally Mana...
Advantages in using Locally Managed Tablespaces:Because locally managed tablespaces do not record free space in data dictionary, it reduces contention on these tables. Local management of extents auto...
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