RDOHELP72.HLB  —  CHANGE_FIELD, Format
  (B)0CHANGE FIELD   qq> name qqk
                lqqqqqqqqqqqj
                mqqwqqqqqqqqqqqqqqq>qqqqqqqqqqqqqqqwqk
                   mq> DESCRIPTION IS /* text */ qqj x
                lqqqqqqqqqqqqqqqqqq<qqqqqqqqqqqqqqqqqj
                mq> field-attributes qq> .

1  –  field-attributes

  (B)0field-attributes =

  DATATYPE IS qqq> data-type qqk
     lqqqqqqqqqqqqqqqqqqqqqqqqqj
     mqqwqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqwqqq>
        mwqwqq> validity-clauseqqqqqqqqqqqqqqqqqqqqqqqwqwqj
         x tqq> missing-value-clauseqqqqqqqqqqqqqqqqqqu x
         x tqq> dtr-clauseqqqqqqqqqqqqqqqqqqqqqqqqqqqqu x
         x tqq> COLLATING_SEQUENCE IS sequence-nameqqqu x
         x mqq> NO COLLATING_SEQUENCE qqqqqqqqqqqqqqqqj x
         mqqqqqqqqqqqqqqqqq<qqqqqqqqqqqqqqqqqqqqqqqqqqqqj

    A list of definitions that indicate what type of data you can
    store in the field and how Oracle Rdb uses that data. If you do
    not change a field attribute in the CHANGE FIELD statement, the
    attribute remains the same. The field attributes include the data
    type and the following optional clauses:

    o  VALID IF

    o  MISSING_VALUE

    o  DATATRIEVE support clauses

    o  COLLATING_SEQUENCE

    Do not use multiple, conflicting clauses in a field definition.

    For a complete description of field attributes, ask for HELP on
    Field_attr.
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