case study cube to stars chem a

8/8/2019 Case Study Cube to Stars Chem A

http://slidepdf.com/reader/full/case-study-cube-to-stars-chem-a 1/16

Distributed DBMS:

Case Study on Data Model

Representation for OLAP Operations

Universityof Calcutta

1



December 17, 2010 Dr. Nabendu Chaki; [email protected]

Medical Clinic Data Analysis 1/2

A data warehouse consists of the threedimensions time, doctor , and patient , and thetwo measures count and charge, where charge

is the fee that a doctor charges a patient for avisit.

Draw and enumerate a cube data model for month-wise data on 4 doctors, 6 patients for a

total period of 1 year Propose the Star/Snowflake Schema for the

above warehouse

1




Medical Clinic Data Analysis 2/2

Starting with the base cuboid [month, doctor ,

patient ], what specific OLAP operations should

be performed in order to list the total fee

collected by each doctor in 2008?

To obtain the same list, write an SQL query

assuming the data are stored in a relational

database with the schema f ee (day, month,

year, doctor, hospital, patient, count, charge).

1



Distributed DBMS:




2




University Data Analysis 1/2

Suppose that a data warehouse for a U niversity consists of the following four dimensions:student, course, semester , and teacher , and two

measures count and average marks. At the lowest conceptual level (e.g., for a given

student, course, semester, and teacher combination), the average marks measurestores the actual marks obtained out of 100 by

the student. At higher conceptual levels, average marks

stores the average mark for a given combination

2




University Data Analysis 2/2

Draw and enumerate a cube data model for 6-month long semester-wise data on 3 courses, 5teachers for a total period of 2 years

Propose the Star/Snowflake Schema for theabove warehouse

Starting with the base cuboid [student , course,semester , instructor ], what specific OLAP operations (e.g., roll-up from semester to year )should one perform in order to list the averagegrade of CS courses for each Big U niversity student.

2



Distributed DBMS:




3




Sports Data Analysis 1/2

A data warehouse consists of the four dimensions, spectator, date, location andgame, and the two measures, count and

charge, where charge is the fare that aspectator pays when watching a game on agiven date. Spectators may be students,adults, or seniors, with each category havingits own charge rate.

Draw and enumerate a cube data model for month-wise data on 4 locations, 4 types of games for a total period of 1 year

3




Sports Data Analysis 2/2

Propose the Star/Snowflake Schema for the

above warehouse

Starting with the base cuboid [date, spectator ,

location, game], what specific OLAP operationsshould one perform in order to list the total

charge paid by student spectators at GM Place

in 2004?

3



Distributed DBMS:




4




Election Data Analysis 1/2

A data warehouse consists of the three

dimensions, political party , date and location,

and the two measures, count and charge,

where charge is the money that a party spendsto organize a election meeting on a location on

a given date.

Draw and enumerate a cube data model for

fortnightly data on 4 locations, and 6 politicalparties for a total period of 3 months during

election

4






above warehouse

Starting with the base cuboid [date, party,

location], what specific OLAP operationsshould one perform in order to list the total

money spent by TMC during the first month of

election?

4



Distributed DBMS:




5





A data warehouse consists of the four

dimensions, drug shop chain, sales type, date

and location, and the one measure, prof it. The

sales may be retail, hospital or company. Draw and enumerate a cube data model for

weekly data on 3 drug shop chains, and 4

locations for a total period of 2 months

5






above warehouse

Starting with the base cuboid [drug shop chain,

date, type, location], what specific OLAP operations should one perform in order to list

the total profit by Apollo in location Chennai

and Thirunelveli during the last 4 weeks?

5



Thank You

case study cube to stars chem a

Documents