Metatables TT and TA

• Tables TT and TA together define a database.

• Each row of table TT describes one table type.

• Each TA-row describes one field of one table.

• Tables TT and TA can reside in the application database, and can be processed by chgen macros, because they have the same format as other tables.

• Tables TT and TA are self-describing: One TT-row describes table TT; another TT_row describes table TA; every TT-row has a set of TA-child rows.

  • Each TA-row contains these field meta-attributes: <name, altname, format, iskey, description>
  • Run ‘chgen -meta ...’ to generate tables TT and TA.

TT

TA

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