Naming Conventions

An index file conforms to the following naming convention:

INDPREF.JOBNAME.DATE.TIME.FILEID

where:

• INDPREF is the index file prefix. This prefix can have either of two structures, depending on the length of the IXHPREF parameter in the CTVPARM member in the IOA.PARM library:
  • If IXHPREF is 3 characters in length, INDPREF has following structure:

    IXHPREF.IXPREF

    where:

    • IXHPREF is the three- character, first-level prefix specified in the IXHPREF parameter in the CTVPARM member. All indexes have the same IXHPREF value.
    • IXPREF is the second-level prefix specified in the IXPREF parameter in the CTVPARM member. All indexes have the same IXPREF value.
• If IXHPREF is one or two characters long, INDPREF takes the value of the CDAM file prefix with one of its characters changed to the value specified in the first character of IXHPREF. Parameter IXPREF from CTVPARM is not used in this case.
  • If IXHPREF is one character, the first character of the CDAM prefix is replaced.

    For example, if IXHPREF=I and the CDAM file prefix is CTDP.L2, INDPREF is ITDP.L2.

  • If IXHPREF is two characters, the second character is an integer from 1 to 7 representing the position number of the character that was replaced.

    For example, if IXHPREF=I6 and the CDAM file prefix is CTDP.L2, INDPREF is CTDP.I2.

• DATE is the letter C, followed by the five-character date in julian format (yyddd).
• TIME the letter T followed by 6 digits indicating the time in hhmmss format.
• FILEID is the File ID beginning with the letter M, followed by one digit (from 1 through 9) which indicates the number of the monitor which created the index, followed by the 3-digit sequential number of the index produced in the decollation mission.

A primary migrated index conforms to the following naming convention:

PMIGXPREF.JOBNAME.DATE.TIME.FILEID

where PMIGXPREF is the file prefix. This prefix can have either of two structures, depending on the length of the DSNPREF parameter in the IOASPRM member in the IOA.PARM library. The length of this parameter should be the same as length of the parameter IXHPREF in member CTVPARM.

• If DSNPREF is 3 characters in length, PMIGXPREF is built as:

  DSNPREF.IXPREF

  where IXPREF is the second-level prefix specified in the IXPREF parameter in the CTVPARM member.

• If DSNPREF is one or two characters long, PMIGXPREF is built by inserting the first DSNPREF character into the original index file prefix.
  • If DSNPREF is one character, it is inserted into the first position.

    For example, if DSNPREF=M and the original index file prefix is ITDP.L2, PMIGXPREF is MITDP.L2.

  • If DSNPREF is two characters long, the second character is an integer from 1 to 7, representing the number of the position into which the first DSNPREF character is inserted.

    For example, if DSNPREF=M6 and the original index file prefix is CTDP.I2, PMIGXPREF is CTDP.MI2.

A secondary migrated index conforms to the following naming convention:

SMIGXPREF.JOBNAME.DATE.TIME.FILEID

where SMIGXPREF is the file prefix. This prefix can have either of two structures, depending on the length of the SECPREF parameter in the IOASPRM member in the IOA.PARM library. The length of this parameter should be the same as length of the parameter IXHPREF in member CTVPARM.

• If SECPREF is 3 characters in length, SMIGPREF is built as:

  SECPREF.IXPREF

  where IXPREF is the second-level prefix specified in the IXPREF parameter in the CTVPARM member.

• If SECPREF is one or two characters long, SMIGXPREF is built by inserting the first SECPREF character into the original index file prefix, using the same method as PMIGXPREF is built from DSNPREF.

  For example, if SECPREF=S and the original index file prefix is ITDP.L2, SMIGXPREF is SITDP.L2. If SECPREF=S6 and the original index file prefix is CTDP.I2, SMIGXPREF is CTDP.SI2.

For both primary and secondary migration, the DATE field has the following format:

DATE–When an index migrates from disk to the level 01 target media, this field remains prefixed by the letter C. This letter is replaced by the next letter in alphabetical sequence during each stage of the multi-stage migration or refresh. The other qualifiers are copied from the original index name.