Interested to Buy Any Domain ? << Click Here >> for more details...
What are the different types of schemas?
- 11 Answers
- 87640 Views
- ITC Infotech, I also Faced
- E-Mail Answers
Answer Posted / thirumalai
There are 3 types of Schemas :
1. Star Schema -The star schema architecture is the
simplest data warehouse schema. It is called a star schema
because the diagram resembles a star, with points radiating
from a center. The center of the star consists of fact
table and the points of the star are the dimension tables.
Usually the fact tables in a star schema are in third
normal form(3NF) whereas dimensional tables are de-
normalized. Despite the fact that the star schema is the
simplest architecture
2. Snow Flake Schema - The snowflake schema architecture is
a more complex variation of the star schema used in a data
warehouse, because the tables which describe the dimensions
are normalized
3. Fact Constallation Schema : For each star schema it is
possible to construct fact constellation schema(for example
by splitting the original star schema into more star
schemes each of them describes facts on another level of
dimension hierarchies). The fact constellation architecture
contains multiple fact tables that share many dimension
tables.
| Is This Answer Correct ? | 11 Yes | 4 No |
Post New Answer View All Answers
explain one complex mapping with logic? sales project?
What do mean by local and global repository?
I have three same source structure tables. But, I want to load into single target table. How do I do this? Explain in detail through mapping flow.
What is the difference between power center and power mart? What is the procedure for creating independent data marts from informatica 7.1?
Explain in detail about scd type 1 through mapping.
How to convert multiple rows to single row (multiple columns) in informatica
What is informatica etl tool?
What is meant by lookup transformation?
1. When u r checking out what ll happens for version no? a. Increase b. decrease c.reset to 0 d. reset to 1 e. no change 2. Salary of all employees needed to add with the commision. What transfrmation to be used? a. SQ and Expression b. SQ c. Update Strategy d. Expression 3. Which of the task is used to run a session based on success of the other session? a. Decision b. Event wait c. Email d. Command e. None 4. Types of sources in Informatica? a. Homogenous n Heterogenous b. None c. Cobol n XML d. Flat files e. Flat files and Homogenous n Heterogenous 5. Servers are available in informatica? a. Informatica Server and Workflow server b. Informatica Server and Informatica Repository Server c. Informatica Server d. Workflow server e. Informatica Repository Server 6. While using Pmcmd in cmd line mode, each command must include the connection info of which of the following? a. workflow manager b. Power Center server c. Workflow monitor d. Repository manager e. Designer 7. Workflow montior displays workflows that have run a. once b. twice c. never d.four times e. thrice 8. Mode for handling sessions n workflows? a. server mode b. Wait mode c. Command line mode d. User mode e. Interactive mode 9. Connection details configured in? a. Mapping designer b. Workflow manager c. Workflow monitor d. Repository manager e. Worklet designer Thanks in Advance
How to open an older version of an object in the workspace?
How big was your fact table
What is dimensional table?
Can you generate sequence numbers without using the sequence generator transformation?
Did u used latest transformations of 8.6.0? for what?
Define sessions in informatica etl?
