How to display loop counter at the screen using PL/SQL loop ?
begin for loopcounter in 1..10 loop dbms_output.put_line(loopcounter); end loop; end; / This piece of code will display the loopcounter in a PL/SQL loop on the screen
using dbms_output.put_line(loop counter variable);
Differentiate between %type and %rowtype attribute in Oracle pl/aql programming ?
%type will use for to define at column level.%rowtype is used to define for one or more than one columns ( like row or record or tuple ) means its user define type which hold one or more than one columns along with it. and generally it used with Cursor.
If you use a cursor, you can return cursor values only by rowtype only.
In a distributed database system can we access two queries simultaneously ? Give reason.
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...
Describe the principles of OOPS in Oracle.
In Oracle with PLSQL language implemented in D2K, we can use principle of INHERITANCE by using Libraries which is oops concept.
What is SQL*loader ? Describe .
Hello,SQL * LOADER is a utility tool which comes inbulit with any versions of Oracle. it is used to load data (.txt,.xls, tables, Doc ...) any flat files of this type can be loaded into Oracle d...
SQL*Loader is a tool used to load flat files quickly into Oracle Tables. Using this, a single flat file can be loaded into multiple tables during the same load.
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 snapshots in SQL ? Why these are used ?
Snapshots are the portion of database. Similar to views
snapshots are local copies of remote data.It is same as materialized views
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
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