home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Hall of Fame
/
HallofFameCDROM.cdr
/
data1
/
ssql22.doc
< prev
next >
Wrap
Text File
|
1990-05-01
|
1KB
|
28 lines
SSQL v2.2 Steve Silva REGISTRATION $ 35.00
DATA FEB90 SILVA SSQL SQL DBASE
FILES: ssql22.sdn
New to SDN
SQL stands for Structured Query Language. It was developed
as a standard method to query (extract data from) a
relational database and do other operations to maintain
relational databases. Relational databases look at files as
if they were simply tables. SQL was developed years ago at a
theoretical level but because of its inherent inefficiencies
and programming complexity, it has been very difficult to
create workable programs. It provides the most flexible
approach to extracting data from a database. It allows us to
extract data in seconds that would take a knowledgeable
programmer hours, days or weeks to extract, even if the
programmer had the most advanced non-SQL languages
available. For a sampling of the types of queries that SQL
can handle, refer to Appendix A.
Most database management systems on PCs, minicomputers, and
mainframes have an SQL interface. So far, there is no
"better" language waiting to replace SQL so once you learn
SQL, it should serve you for many years.
(SDA format Copyright 1990 SDN Project for SDNet/Works! (sm))