How to know database name and schema name

Hi ,
Once after logging in the database,how is it possible to know the current database and schema which we r using?Is there any system table where we can get the database names and schema names?
please help me out.itz urgent.
Regards,
Sravan

Probably not.
If the database name is the name of the current database, it would be essentially redundant. If the database name is the name of some other database, in order to get the names of all the tables in the specified schema, you could create a database link to the remote system (which assumes you have a login and password to the remote database with appropriate privileges, that the database server's tnsnames.ora file has an entry for the remote database, etc) and query the remote data dictionary tables. Even if you could do that, however, you could not dynamically create triggers on the remote database since DDL over a database link.
In theory, you could also load an appropriate JDBC driver into the database and write a Java stored procedure that would connect to the remote database (again, with an appropriate user name & password, host name, and port number) and issue DDL against that remote database. I have a hard time believing, however, that this would be a particularly beneficial approach. It would be easier just to put the appropriate code into each database that needs triggers generated or to have a separate Java application that generates triggers for a number of different databases.
Justin

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begin
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, genTypes        => false
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2 from user_xml_tables
3 where xmlschema = 'my_schema.xsd'
4 and element_name = 'employee';
TABLE_NAME
employee1121_TAB
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<?xml version="1.0" encoding="UTF-8" ?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xdb="http://xmlns.oracle.com/xdb">
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</details>
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2
3    res boolean;
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12    </details>
13   </employee>'
14   );
15
16 begin
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20           );
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22 /
PL/SQL procedure successfully completed
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SYS_NC_ROWINFO$
<employee xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceS
<details>
    <emp_id>1</emp_id>
    <emp_name>SMITH</emp_name>
    <emp_age>40</emp_age>
    <emp_dept>10</emp_dept>
</details>
</employee>
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2 from "employee1121_TAB" t
3     , xmltable('/employee/details'
4         passing t.object_value
5         columns emp_id   integer      path 'emp_id'
6               , emp_name varchar2(30) path 'emp_name'
7       ) x
8 ;
                                 EMP_ID EMP_NAME
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How to get the class name and field name dynamically

Hi
I have a class (ex: Contract) the fields (ex : a,b,c) .i need to get the class name and field name dynamically
ex
if( validation file for the field Contract.a){
return contract.a;
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YoungWinston wrote:
maheshguruswamy wrote:
Agreed, but IMO, i still feel its best if there is no tie in between consumer class level details and the database it talks to. A service layer is needed in between them.Sounds like you've done a bit of this before. Me, I've either been a modeller/DBA, doling out data, or a nuts and bolts programmer (and actually more toolmaker than apps, but did a bit of that too).
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[url http://www.amazon.com/Enterprise-Integration-Patterns-Designing-Deploying/dp/0321200683/ref=pd_sim_b_1]Enterprise Integration Patterns

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I have one difficult requirement
I have some column values and they have given some alias column names but i need to find the correct column name and table name from the database.
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How to find the column name and table name with a value

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How to know database name and schema name

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