<s>
A	O
key-sequenced	B-Application
data	I-Application
set	I-Application
(	O
KSDS	O
)	O
is	O
a	O
type	O
of	O
data	B-Application
set	I-Application
used	O
by	O
IBM	O
's	O
VSAM	O
computer	B-General_Concept
data	I-General_Concept
storage	I-General_Concept
system	O
.	O
</s>
<s>
A	O
KSDS	O
consists	O
of	O
two	O
parts	O
,	O
the	O
data	O
component	O
and	O
a	O
separate	O
index	B-Data_Structure
file	I-Data_Structure
known	O
as	O
the	O
index	O
component	O
which	O
allows	O
the	O
system	O
to	O
physically	O
locate	O
the	O
record	O
in	O
the	O
data	O
file	O
by	O
its	O
key	O
value	O
.	O
</s>
<s>
As	O
a	O
VSAM	O
data	B-Application
set	I-Application
,	O
the	O
KSDS	O
data	O
and	O
index	O
components	O
consist	O
of	O
control	O
intervals	O
which	O
are	O
further	O
organized	O
in	O
control	O
areas	O
.	O
</s>
