Relationship basically denotes how activities in a

networkorder are related to each other.They can be

classified into 4 categories - SS (Start-Start), SF(Start-

Finish), FF (Finish-Finish), FS (Finish - Start).

For 2 activities say A and B

SS -->> Both A and B start together

SF -->> Start of A coincides with finish of B and so on.

We can also specify the time gap between which these

relationships work. Say in an SS relationship, there can be

a 10 minutes gap between start of A and B and so on.