suppose data are coming from different locations and those
data will not change . is there any need to use surrogate key ?
Answers were Sorted based on User's Feedback
Answer / suri
Yes, We should use the surrogate key, here we are geeting
data from different locations means every one have one
primary key, while transforming the data into target that
time morethan two key not in use so if you use surrogate
key it will identified the duplicate fields in dimensional
table.
| Is This Answer Correct ? | 6 Yes | 0 No |
What is cubes?
What are the different types of datawarehosuing?
Suppose we have some 10,000 odd records in source system and when load them into target.how do we ensure that all 10,000 records that are loaded to target doesnt contain any garbage values?
What is execution plan?
Explain what are slowly changing dimensions?
if we increase the number of dimensions will the rows in fact table increase or decrease??
What is ods (operation data source)?
State any 5 of Cods guidelines of an OLAP system, brief description each?
What are the main steps to build the data warehouse?
What Oracle features can be used to optimize my Warehouse system?
What is perform recovery?
How to create diff. Types of templates?