what is sla,ola and underpinning contract

[Shaik22]

Hello,

Please provide answers to below questions.

1.what is sla, ola and underpinning contract

2. SLA  snow page options

3.What are the limitations of client scripts

4.Fix script vs background script

5.Base table and child table relationships.

6.2 level, 3 level traversing and dot walking.

[Maik Skoddow]

Please create individual posts for each individual question. And before please google the answers by yourself. The knowledge for such basic questions is out there.

Thanks
Maik