home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Suzy B Software 2
/
Suzy B Software CD-ROM 2 (1994).iso
/
nasa
/
satdb10
/
readme.1st
< prev
next >
Wrap
Text File
|
1995-05-02
|
2KB
|
33 lines
A Note on SAT-DB10 Structure 26 January 1991
In order to satisfy requests that the SAT-DB database be provided in an
ASCII format and in smaller blocks, the database has now been written out in
dBase II SDF (System Data Format). In addition, the file has been broken up
into seven blocks according to the year of launch. For example, SAT57-60.TXT
contains all the satellites launched from 1957 through 1960.
The SDF represents a compromise which should be acceptable to all users.
Unfortunately, as with most compromises, there are some limitations.
The first limitation (for non-dBase II users) is that in the ASCII file,
some of the fields run together. However, the data remains in a tabular
format with the fields (as described in SAT-DBF.DOC) beginning at columns 1,
11, 36, 41, 47, 56, 61, 70, 77, 82, 88, and 94. This should present a minor
inconvenience. If you do not agree with this assessment, please let me know
what problems it presents for your application.
The second limitation impacts dBase II/III users. It requires that you
build the SAT.DBF from the SDF files. To do this, use the BUILDSAT.CMD
(rename to BUILDSAT.PRG for MS-DOS systems) file. Simply type DBASE BUILDSAT.
It will start with the empty SAT.DBF (which contains the structure only) and
APPEND from each of the SAT??-??.TXT files using the SDF option (dBase III
users should use DCONVERT to convert the empty SAT.DBF from dBase II to dBase
III format. Again, since this procedure need be performed only once, it
should present only a minor inconvenience, provided you have sufficient disk
space.
TS Kelso, SYSOP
Celestial BBS, (513) 427-0674
300/1200/2400 Baud, 24 Hrs
8 Data/No Parity/1 Stop