| rdbms [message #365697] |
Tue, 14 September 1999 12:15  |
pooja
Messages: 31
Registered: September 1999
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Member |
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I would like to know what is actually a RDBMS.
And what are the differences between two popular RDBMS ie ORACLE and SYBASE.
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| Re: rdbms [message #365701 is a reply to message #365697] |
Thu, 16 September 1999 10:26  |
m a sivan
Messages: 34
Registered: July 1999
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Member |
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Well RDBMS is relational Database Management System which in simple terms suggest that any data can be expressed in two-dimesional format(table) and it uses relational algebra. This is actually the basic answer and you have to read books on database systems by Desai, james Martin, CJ Date etc. to understand more. Also I have mailed u something about RDBMS. Any doubts please let me know...
ORACLE and SYBASE are again two RDBMS giants in competition and have lots of difference and similarities. But more of them are marketing gimmick. and both have their advantages and disadvantages.
please let me know for any specific reason u require the differences. For e.g if ur company is evaluation SYBASE/ORACLE etc..
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| Re: rdbms [message #365702 is a reply to message #365697] |
Thu, 16 September 1999 10:27 |
m a sivan
Messages: 34
Registered: July 1999
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Member |
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Well RDBMS is relational Database Management System which in simple terms suggest that any data can be expressed in two-dimesional format(table) and it uses relational algebra. This is actually the basic answer and you have to read books on database systems by Desai, james Martin, CJ Date etc. to understand more. Also I have mailed u something about RDBMS. Any doubts please let me know...
ORACLE and SYBASE are again two RDBMS giants in competition and have lots of difference and similarities. But more of them are marketing gimmick. and both have their advantages and disadvantages.
please let me know for any specific reason u require the differences. For e.g if ur company is evaluation SYBASE/ORACLE etc..
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| Re: rdbms [message #365710 is a reply to message #365697] |
Fri, 01 October 1999 11:41 |
Rajesh Matkar
Messages: 20
Registered: September 1999
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Junior Member |
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Hi,
The RDBMS based on Relational Model. There are three basic conceptual rules to identify RDBMS and all the RDBMS's follows the following rules
1. Define Integrity Constraints (Business Rules)
2. Define Relation (by using Primary and Foreign
Key)
3. Operation on Relation
So some general charactersicts are like Physical and Logical Independence and High Security etc.
In ORACLE and SYBASE, some features found in one, same thing some are notfound together.
If you have any specific Question, back to me.
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| Re: rdbms [message #365713 is a reply to message #365701] |
Sat, 09 October 1999 07:29 |
Praveen Luthra
Messages: 2
Registered: October 1999
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Junior Member |
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Please answer the below question at : praveen73@hotmail.com
1. The advantages of RDBMSs over earlier DBMSs.
2. The main applications targeted by RDBMS
3. Major vendors and their market strategies
4. A comparison of Sybase with Oracle, enumerating the relative merits and demerits of each.
5. RDBMS application in Client / Server environments.
Thanks
Praveen
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| Re: rdbms [message #365714 is a reply to message #365701] |
Sat, 09 October 1999 07:30 |
Praveen Luthra
Messages: 2
Registered: October 1999
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Junior Member |
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Please answer the below question at : praveen73@hotmail.com
1. The advantages of RDBMSs over earlier DBMSs.
2. The main applications targeted by RDBMS
3. Major vendors and their market strategies
4. A comparison of Sybase with Oracle, enumerating the relative merits and demerits of each.
5. RDBMS application in Client / Server environments.
Thanks
Praveen
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| Re: rdbms [message #365773 is a reply to message #365697] |
Tue, 25 January 2000 09:07 |
Asif Mehmood
Messages: 2
Registered: January 2000
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Junior Member |
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Dear Pooja
RDBMS is a special kind of DataBase Managment System which stores data in form Table . A table consist of rows and columns each row represent a record. There many books available on RDBMSystems. Most papular writer is C.J. Date. Example of RDBMS are MS access, Oracle and Other.
for more information you can contact me
asif_mehmood@mailexcite.com
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