Certain relational data sources support a data type called STRING to store alphanumeric data that has an unlimited length. This type of data can be mapped to the TX data type. However, text fields have limitations on their use in FOCUS sort and selection phrases.
The format specification for a STRING field has no length specification. The length is determined on retrieval. For example:
FIELD1/STRING
The STRING data type has all of the functionality of alphanumeric data types in FOCUS. The limit to a STRING field value length is 2 GB. It can be propagated to relational data sources that have the STRING data type and to delimited HOLD files, where both the USAGE and ACTUAL formats are generated as STRING.
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