what is the difference between OLTP database and data
warehousing database?
Answers were Sorted based on User's Feedback
Answer / sanchari chowdhury
Records in a OLTP database can be updated or modified or
deleted. However,the same is not possible in DW.
OLTP database is used for transactional purposes e.g. day-
to-day sales or finance and DW is used for analytical
decisions.DW is mainly used for business decisions to
ensure stability of the organisation by curbing the
possible failures. This is possible because it contains the
historical or the archived data for analysis.
| Is This Answer Correct ? | 7 Yes | 1 No |
Answer / parvar
The main difference between oltp and dw are,
Oltp dw
1 current data historical data
2 normalized data de-normalized data
3 small database large database
4 application-oriented subject-oriented
5 row by row loading bulk loading the data
The data
| Is This Answer Correct ? | 0 Yes | 0 No |
Give a way in which u can implement a real time scenario where data in a table is changing and u need to look up data from it.How will u configure the look up transform for this purpose?
what is the difference steps for data modeling?
list the transformation used for the following:Heterogeneous sources,Homogeneous sources,Find the 5 highest paid employees with in a dept,create a summery table,generate surrogate keys
how would u estimate the size of Lookup transform data and index cache?
how do u really know that paging to disk is happening while u are using a lookup transform?
Can u access a repository created in previous version of Informatica?
When do we analyze the tables?
we hava more than 1000 records. i have to select first 5 record, last 5 record and 5 records from middle of the source. how can i do in oracle as well as in informetica??
What is etl process? How many steps etl contains?
when should one create lookup transformation ?
Explain me ETL project architecture in Detail?
my name is amar i want display 1st line A 2nd line M 3rd line A 4th line R in database & informatica