Difference between database design and schema design

Hi i have visited so many database websites and i found so many people saying we can design a data base for you. Is schema designing and database designing is the same. so many palces i find people saying we have to design data base first in order to create a physical databse. so i am little bit confused. are they same? and also what is the difference between data model and schema?

> the definition i found for logical data model, physical data model and the definition you
gave for logical database design, physical database design are the same.
Not correct. The physical design is the implemetation of the logical design. These two designs are at different levels. Also, the logical design will be the same. irrespective of the RDBMS product use.
What is incorrect is a designer/architect designing a logical design specifically for Oracle.. or specifically for SQL-Server. A logical design has nothing to do with the RDBMS product (or h/w platforms. app servers, web severs and operating systems used).
So the logical design will always be the same - it is RDBMS independent.
The physical design is fully dependent on the RDBMS product used. The same logical design will be implemented as different physical designs for Oracle and for SQL-Server.

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Difference between Database, instance and schema

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I don't know the clear difference between database, instance and schema.. In the broad sense, everything seems to be the same. If anyone can differentiate between them with some example, that will be of great help.
Thank you.

Hi,
In Oracle, people often do use "database" and "instance" interchangeably, or together as one term: "database instance".
A "schema" is quite different. A schema is a collection of objects (such as tables, indexes or procedures). Every object belongs to exactly one schema, and every schema is a part of exactly one database. (Names may not be unique, however. For example, your database may have one schema named SCOTT, and another schema named USER1. Each of those schemas may have a table named EMP. The EMP table in the SCOTT schema, or SCOTT.EMP, is not the same as the EMP table in the USER1 schema, or USER1.EMP. A different database, my database for example, may also have schemas called SCOTT and USER1, which are completely independent of the SCOTT and USER1 in your database.)

Difference between database, websheet and packaged applications

Hi,
Can any one explain the difference between database, websheet and packaged applications?
So far i have worked on database application and not aware of the other applications.
Regards
Narender B

Narender wrote:
Can any one explain the difference between database, websheet and packaged applications?
So far i have worked on database application and not aware of the other applications.
This is fully covered in the documentation:
About Database Applications
About Websheet Applications
About Packaged Applications
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Hi, difference between database view and elementary search help

hi
pl. can any one tell me the difference between
database view and elementary search help,
and help view and elementary search help,
and database view and help view.
in the output i do not see any difference.
thanx.
rocky robo

HI
An entire table can be included in a database view. In this case all the fields of the included table will become fields of the view (whereby you can explicitly exclude certain fields). If new fields are included in the table or existing fields are deleted, the view is automatically adjusted to this change.
Database view:
<a href="http://help.sap.com/saphelp_nw04/helpdata/en/36/74c0358373003ee10000009b38f839/frameset.htm">http://help.sap.com/saphelp_nw04/helpdata/en/36/74c0358373003ee10000009b38f839/frameset.htm</a>
Elementary search help:
<a href="http://help.sap.com/saphelp_nw04/helpdata/en/cf/21ee38446011d189700000e8322d00/frameset.htm">http://help.sap.com/saphelp_nw04/helpdata/en/cf/21ee38446011d189700000e8322d00/frameset.htm</a>
<a href="http://help.sap.com/saphelp_nw04/helpdata/en/8b/415d363640933fe10000009b38f839/frameset.htm">http://help.sap.com/saphelp_nw04/helpdata/en/8b/415d363640933fe10000009b38f839/frameset.htm</a>
Help view:
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<a href="http://help.sap.com/saphelp_nw04/helpdata/en/42/81c1351181b73fe10000009b38f839/frameset.htm">http://help.sap.com/saphelp_nw04/helpdata/en/42/81c1351181b73fe10000009b38f839/frameset.htm</a>
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What is the exact difference between Database Cloning and Database Refresh?

Hi,
Can anybody tel me the exact difference between Database Cloning and Database Refresh?
I Have some conflicts in these topics.
Thanks
Rajesh

Refresh is what it says, "refresh" . You have a main site which would always have the data being inserted into it. There would be another site which would remain some where else . This site needs to be refreshed with the primary site. So you need to do export from the primary, push it to the secondary site and done!
HTH
Aman....

Difference between Database Mirroring and Cloning?

Hi,
Can anybody tell me the exact difference between Database Mirrorring and cloning?
Is database mirroring and multiplexing same?
Thanks
Rajesh

cannot be kept current automatically with the source database It is possible using manually scripted code to automatically update a cloned database to in effect build your own mirrowing process. This is basically a description of home grown Data Guard and is how many sites maintained a ready to use backup prior to Oracle introducing Data Guard.
The best way to create a clone database today is probably to use the rman duplicate command.
The clone could be the base for use with a mirrowing process you are setting up or used for other purposes such as providing a consistent frozen snapshot of production for special reporting. It could become the unit test or system test environment or perhaps be used for diaster recovery purposes.
A clone is a one-time event. Mirrowing is an ongoing process.
HTH -- Mark D Powell --

Difference between database rename and refresh

can any bodt tell the exact difference between database rename and refresh and the procedures between the both?

Oh
Rename--- as the name itself says rename the DB
your id is user583972
rename=change the user583972 to your NAME
Refresh=Copy from production and replicate in QA/DEV/TEST for the same purposes

Difference between Database view and Table

Hi there,
Can anyone tell me the difference between Database view and Table.
Will the Database view query be more faster than a database table?

Tables and database views can be defined in the ABAP Dictionary.
These objects are created in the underlying database with this definition. Changes in the definition of a table or database view are also automatically made in the database.
Data from several tables can be combined in a meaningful way using a view (join).
You can also hide information that is of no interest to you (projection) or only display
those data records that satisfy certain conditions (selection).
Database views implement an inner join. You only get those records which have an
entry in all the tables included in the view.
in views db modifications are not possible
views only contain data at run time
when they consult the database
in case of views the join definitions are already sstored in the database itself
whereas join as open sql is a query to oracle database as similar select statements
Views are optimized by SAP and stored in the repository while Joins
are in reports that needs to be compiled at every execution
Reward if helps
Regards,
Senthil
Message was edited by: senthil kumar

Difference between Classic, Enjoy and Signature design

Hi guys,
We are about to install SAP GUI version 720 for accessing SAP GL on ECC6 (NW7.01) and are looking into the desktop requirememnts in terms of CPU, Memory etc.
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Many thanks

My apologies.
I cannot speak for SAP's reasons as I do not work for them, however, the difference here which we have encountered is just the choice for users to make it more aesthetically pleasing. There are no items/options/buttons which are missing due to the theme selection. (At least that we have heard or come across) It is more of a personal choice. I do not use the signature design personally but many users have adopted the new theme. We have about 20-30 thousand users of SAP gui and just have a document posted on how to change the theme if they do not like the SAP Signature one as it was the default when rolled out.
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Confussing between Database User and Application User in Discoverer

Hi All,
I am new to Discoverer.
Please let me know the difference between Database User and Application User in Discoverer Administrator as well as in Discoverer Desktop Editions.
1) While I am trying to connect to Discoverer Desktop, I am unable to connect to it with Apps Database User.
2) Where the Discoverer compenent will be installed and what the configuration settings need to done work on it.
Please let me know the answers soon.
Thanks in Advance.

Hello
I think a database user should pretty much be self explanatory - this is a user account that exists in the database. This account is created by your Database Administrator (DBA).
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http://ascbi.com

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I am not able to understand difference between Conformed dimension and Role play dimension.. Can anyone please explain the diff between both with real time example.
I am confused with Date Dimension.
Here i encountered, Cube dimension and Database dimension,what is that actually.
Thanks

Hi DevBi,
According to your description, you want to know the difference between database dimension and cube dimension. Right?
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Reference:
Role-playing Dimensions
If you have any question, please feel free to ask.
Simon Hou
TechNet Community Support

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Can someone tell me the differences between Session Facade and Business Delegate design patterns

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3. In SF any change in Session bean would make client code change.
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Difference Between Database Schema and Database User Account ??

First i would like to know what an Oracle Database schema exactly is ?
And what is it for and also What is it's use ?
Later the exact "Difference Between Database Schema and Database User Account".
I googled about it but i'm unable to find out it's The difference,
Please try to explain in a simple manner........
Thank you very Much in Advance..........

user13655582 wrote:
Greate example. but i would like add one more point..
a user is a schema and schema is a user. but when this applies to the user that he become a schema, only if he has got some objects. so we can say while creating the user which dosent contain any objects called simple user account but afterwords when he has got an objects then we can say its a schema as the above user has shown you through the exampleIt is just word-play. There is nothing in like a 'status' indicator to say "USER_A is just a user but USER_B has become a schema". Many people use the terms "user" and "schema" interchangeably, and some very good DBAs will insist this is correct. I don't disagree with them even though I usually try to make the distinction.
In a typical application, all of the objects (tables, procedures, etc) that implement the app will be owned by a "application schema owner" - a user which exists for the sole purpose of owning the schema. Said user will have no privileges at all .. especially not CREATE SESSION. Except for possible maintenance activity no one ever actually connects as this user. User accounts are then given to actual humans who connect with their own accounts. The accounts have the necessary system and object privileges granted to them - via a role. One could also create a special account (let's call it APP_ADMIN) that is used for maintenance and batch operations within the application.

Difference Between Web application design and Report Designer

Hi,
I have searched in the forum as well i Google it but still i am not clear the difference between Web application Designer and report Designer , why especially we go for WAD ? and what is not possible in Report designer which we can do in WAD Please some one explain me that would be great helpful to me. i am having lot of confusion in this issue.
thanks,
Gal

Hi,
The Report designer is completely for formating of your query and results. Here you have the flexibility to design your query(one/more) results in your own way.
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Regards,
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Good morning
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Thank´s

In a nutshell:
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Difference between database design and schema design

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