Indexes consist of an index library file (
IXILB.ILB) and a corresponding
group of index files (
ILBfile is used only if dtSearch Desktop is enabled. Index libraries are essentially lists that keep track of the names and locations of each index.
The IXLIB.TLLfile contains the same information as the library file, in addition to information used exclusively by Experience Analytics CX.
An index directory is a sub-directory below the
directory. Index directories are named with the time and date of index creation in the following
xxx is three sequential uppercase letters. For example, an index created
on December 12, 2018 may be stored in a directory named
An index file may represent several sessions, a single session, or a partial session depending on the limits specified for your indexing options. The number of created indexes depends on the individual index size limit specified in the Indexing Options dialog box. For example, if the individual index size is limited to 50 MB, a new index directory is created after the files in the current index directory reach this limit.
After an index is created, it is added to the library file and listed by directory name.
Some rules by which the index performs indexing of specific characters can be applied through the
alphabet.dat file. Additional special rules may be apply to specific data