OLAP operations• 1. Slicing

• 2. Dicing

• 3. Drilling

• 4. Pivot

Slicing

•Slicing is done by selecting along one dimension.

Bsc IT

BCA

BBA

Bsc FT

I II III IV V IV

CybotechZHI

APTECH

I II III IV V VI

Bsc IT

BCA

BBA

Bsc FT

CYBOTECH

Slice (Institute)= ‘Cybotech’ C [Institute, course, semester] = C[course, semester];

Dicing

•Dicing is done by selecting along two or three dimension.

Bsc IT

BCA

BBA

Bsc FT

I II III IV V IV

CybotechZHI

APTECH

I II III IV V VI

Bsc IT

BCA

CYBOTECH

Dice (Institute)= ‘Cybotech’ or ‘ZHI’ and course=“Bsc IT” or “BCA” C [Institute, course, semester] = C[Institute’ , course’ , semester];

ZHI

Drilling : (a) Drill up:

Drills with switching from a detailed to an aggrigated level within same classification hierarchy.

week > month > quarter>

(b) Drill down:

•Switching from an aggrigated to a more deatailed level within the same classification hierarchy.

Pivot or Rotate:• A visulisation operation which

rotates the data access in order to provide an alternative representation.

3 D > 2 D

BY: OM PRAKASH

**Thanks **

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