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Database system having heterogeneous object types

  • US 7,124,140 B2
  • Filed: 12/10/2001
  • Issued: 10/17/2006
  • Est. Priority Date: 12/10/2001
  • Status: Active Grant
First Claim
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1. A method for extracting metadata for plural related objects of different types from a database, comprising:

  • defining a heterogeneous object type as a collection of database objects of different types;

    upon a single object type request to fetch a particular heterogeneous object, fetching metadata of member objects from the particular heterogeneous object in a specific order based on the definition of the heterogeneous objects type, the specific order being a valid order for recreating the particular heterogeneous object;

    restricting a set of member objects to be fetched according to at least one specified filter;

    wherein the at least one specified filter is translated to a second filter according to a type of a member object being fetched; and

    storing the metadata from the fetched objects in a file.

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