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Thread: Difference between metadata and data dictionary

  1. 06-18-2008 #1
    Diamond Sowjanya is offline
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    Difference between metadata and data dictionary

    Can anyone tell the difference between Data Dictionary and Meta data?

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  2. 06-22-2008 #2
    pradeepkumar.chnv81 is offline
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    Re: Difference between metadata and data dictionary

    Quote Originally Posted by Diamond Sowjanya View Post
    Can anyone tell the difference between Data Dictionary and Meta data?
    metadata: this is nothing but data about data.

    for example: in oracle

    desc
    then what it displays is nothing but metadata. it means it gives feilds information,i.e nothing but metadata

    but i donot know about data dictionary.can u gv wt it mean.

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  3. 06-22-2008 #3
    pradeepkumar.chnv81 is offline
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    Re: Difference between metadata and data dictionary

    can u gv wt the diff b/w informatica 7 series and informatica 8 series

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  4. 07-09-2008 #4
    sunsat007 is offline
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    Re: Difference between metadata and data dictionary

    Metadata : Data about data is called matadata. Eg: Desc emp. The output is metadata. It has only the table structure description and constraints defined on it.Meta data is a subset of data dictionary.


    Data Dictionary: This typically includes the names and descriptions of various tables and fields in each database, plus additional details, like the type and length of each data element. Data dictionary contains information that the DBMS requires to perform its functions and support its particular implementation.
    NOTE: This is not universally defined.
    Items typically found in a DBMS data dictionary include:

    detailed descriptions of tables and fields
    indexing information
    referential integrity constraints
    database schema definitions
    stored procedures and database triggers
    access control information, such as usernames, roles, and privileges
    storage allocation parameters
    database usage statistics


    Regards,
    Sun

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