Table 1. Summary of NIS Releases

Release 1 Data: 1988-92

• 8 States in 1988
• 11 States in 1989-92

Media/format options:
On CD-ROM, ASCII format

Structure of release:

• 5 years of NIS data in a 26-CD set, 4 CDs per year (one quarter per disk).
• Two 10-percent Subsamples of discharges for each year.

Media/format options:
On magnetic tape, EBCDIC or SAS transport format

Structure of release:

• Each year sold separately.

Release 2 Data: 1993

• 17 States

Release 3 Data: 1994

• 17 States

Release 4 Data: 1995

• 19 States

Release 5 Data: 1996

• 19 States

Release 6 Data: 1997

• 22 States

Media/format options:
On CD-ROM, ASCII format

Structure of release:

• 1 year of data in a 6-CD-ROM set, structured for use on microcomputers.
• Two 10-percent subsamples of discharges.

Release 7 Data: 1998

• 22 States

Release 8 Data: 1999

• 24 States

Media/format options:
On CD-ROM, ASCII format

Structure of release:

• 1 year of data in a 2-CD set, compressed files.
• Two 10-percent Subsamples of discharges.