| Informix Guide to GLS Functionality Managing GLS Files |
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In addition to GLS locale files, Informix products might also use the following GLS files:
The Informix registry file converts locale aliases to valid locale filenames. 
The code-set-conversion file describes how to map each character in a particular source code set to the characters of a particular target code set. Informix products can perform a given code-set conversion if code-set-conversion files exist to describe the mapping between the two code sets.
Important: A client application checks the code sets that the client and database locales support when it begins execution. If code sets are different, and no code-set-conversion files exist, the client application generates an error. For information, see Establishing a Database Connection.
When an Informix product needs to obtain code-set-conversion information, it accesses one of the GLS code-set-conversion files in the following table.