CICS Nucleus in Mainframe Computer System

1) The CICS Nucleus consits of a set of control programs and control tables.

2) The control programs are supplied by IBM.

3) The Control tables are userdefined.

IBM suplied Control Programs

a) DFHSIP
b) DFIHTCP
c) DFHSCP
d) DFHFLP

User defined Control tables

1) PPT
2) FCT
3) TCT
4) TST
5) DCT
6) JCT
7) PCT

Defining resouces into the control tables add a new entry into the control tables. The resouces entries can be made in any of the following ways.
1) Through a CICS transaction called CEDA.
2) Through batch using DFHCSDUP utility process.