***** File NETINFO.TXT
This information file is located in the \INDEX\NETABLES directory, which
contains 26 index tables. Twenty of the tables have been generated from the
so-called "printed archive"; the remaining 6 are Discipline-specific tables
which contain most of the FITS keywords for those Disciplines (the comments on
the right hand side of the text file \DOCUMENT\CDTREE.TXT differentiate the
printed archive from the Discipline-specific tables). These tables cover the
entire time span of the data contained within the IHW archive, hence datasets
described herein can be found on any one of the set of 5 "mixed disc" CD-ROMs
(Volumes 19-23). For each of the tables there are 4 files:
*.DBF - These are dBASE III+ compatible database files. They do not
contain any data records, only the structure of the
corresponding database. The data records may be appended from
the data tables (in the .IDX files). Many database management
systems can import databases from .DBF files.
*.IDX - These files contain the actual data records from each table.
They are delimited tables. Numeric fields are delimited by
commas (,) and ASCII text fields are contained in quotes (")
and also delimited with commas. Each line ends with the
characters <CR><LF> (ASCII 13 and 10 respectively). All fields
in the tables are fixed width to facilitate their use in that
format, as well. These files may be appended to the end of an
empty database structure to create the full index database.
*.HDR - These are the FITS labels describing the *.IDX files in terms
of FITS tables. By concatenating the *.HDR and *.IDX files
into one file a true FITS table byte stream could be
generated.
*.LBL - These are PDS labels describing the data tables. They already
contain pointers to the data tables, so no further steps are
required to make them accessible to PDS table-processing
software.
*.STR - These are "structure" files. They contain information, in
delimited format, on the number, names and widths of the
fields in each database. They can used by dBASE III for
creating the printed archive index tables, and also document
the structure of each table.
The table shown below gives the index table name, the number of fields, the
number of entries in each table, the width of each table, and the total length
of the *.idx file in Kbytes. The total width per entry is a multiple of 4
bytes and includes the explicit carriage return and line feed characters that
have been added. There may be upto 3 blank characters before the line feed.
table fields entries total width bytes
per table per table per entry (Kbytes)
--------------------------------------------------------
am_draw 16 1294 116 151
am_photo 18 2170 148 322
am_spect 18 2415 152 368
am_vis 24 11641 160 1834
astrom 11 6475 120 777
ir_image 12 95 116 12
ir_phot 20 2204 148 327
ir_pol 19 49 140 7
ir_spect 13 84 128 11
ls_phen 19 3214 168 540
near_nuc 16 3523 136 480
phot_flx 18 10495 140 1470
phot_mag 18 3718 140 521
phot_pol 20 752 152 115
phot_sto 21 132 164 22
radio_cn 19 97 144 14
radio_oc 10 6 108 1
radio_rr 18 1 132 1
radio_sl 24 1846 172 318
spectr 25 3368 176 593
netamatv 36 11641 272 3167
netlarge 73 3383 792 2680
netmetr 57 6969 320 2258
netmetv 16 1624 204 332
netradio 106 1950 1472 2871
netspect 62 3368 820 2763
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