Difference between ODS and Staging
Answers were Sorted based on User's Feedback
Answer / sunil
ODS means operational data store which supports operational
monitoring,data is
volatile,current,detailed,subjectoriented and integrated.
Staging is temperary storage location which is used for
processing the data.
staging area cleans operational data before loading the
data into Dw.
Is This Answer Correct ? | 17 Yes | 3 No |
Answer / harshad
An operational data store (ODS) is a type of database often
used as an interim area for a data warehouse. Unlike a data
warehouse, which contains static data, the contents of the
ODS are updated through the course of business operations.
An ODS is designed to quickly perform relatively simple
queries on small amounts of data (such as finding the
status of a customer order), rather than the complex
queries on large amounts of data typical of the data
warehouse. An ODS is similar to your short term memory in
that it stores only very recent information; in comparison,
the data warehouse is more like long term memory in that it
stores relatively permanent information.
But in staging we are storing current as well as historic
data. This data might be a raw and then need cleansing and
transform before load into datawarehouse.
Is This Answer Correct ? | 28 Yes | 15 No |
Answer / pravin
Operational Data store is a subject
oriented,integrated,current,volatile collection of data
used to support the tactical decision making process for
the enterprise. It is the central point of data integration
for busienss management,delivering a common view of
enterprise data.
In Staging Area you are carried out ETL operations as per
your business logic in order to fetch processed information
into data ware house.
Is This Answer Correct ? | 9 Yes | 12 No |
Answer / kalpana
1. ODS is close to the source. We can say it is a replica
of source system.
While the staging area is a replica of the target DW.
2. The dimention and fact will come into picture here in
staging.
3. We are doing the Transformations in staging schema
before loading it to the target.
4. We integrate different ODS source systems into the
staging area and not in the ODS.
Is This Answer Correct ? | 17 Yes | 21 No |
How to use the tool Ontobulider
Which parameter specified in the default storage clause of create tablespace cannot be altered after creating the table space?
What is the function of surrogate key in data warehousing?
Why should you put your data warehouse on a different system than your oltp system?
Define data warehouse?
Explain what are non-additive facts?
How can we do data cleaning?
Can you describe me a problem you faced when you were trying to load data from R3 system and another system outside sap systems?
For faster process, what we will do with the universe?
State any 5 of Cods guidelines of an OLAP system, brief description each?
Explain a mapping, session, worklet, workflow, mapplet?
what are different storage options supported by oracle ?