Interested to Buy Any Domain ? << Click Here >> for more details...
explain different types of modeling.
- 2 Answers
- 11349 Views
- I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / kshatri
There are again types of modeling:
Data modeling,
Dimension Modeling,
Multidimensional Modeling
Physical Model
Locial Model
Data Modeling: Data modeling is the process of designing a
data base model. In this data model data will be stored in
two types of table fact table, dimension table fact table
contains the transaction data, and dimension table contains
the master data
Dimensional Modeling: It is a logical design technique that
seeks to present the data in a standard, intuitive
framework that allows for high-performance access. There
are different data modelings concepts like ER Modeling
(Entity Relationship modeling), DM (Dimensional modeling),
Hierarchal Modelling, Network modelling.But popular are ER
and DM only
During the logical design phase, you defined a model for
your data warehouse consisting of entities, attributes, and
relationships. The entities are linked together using
relationships.
During the physical design process, you translate the
expected schemas into actual database structures. At this
time, you have to map:
• Entities to tables
• Relationships to foreign key constraints
• Attributes to columns
• Primary unique identifiers to primary key
constraints
• Unique identifiers to unique key constraints
| Is This Answer Correct ? | 10 Yes | 2 No |
Answer / pushparao
modeling is defined as to convert requirements of the business
users into technical structures.
1.conceptual modeling
2.logical modeling
3.physical modeling
example modeling tools:ERwin
| Is This Answer Correct ? | 5 Yes | 2 No |
What is tracing level and what are the types of tracing level?
star and snowflake schema?
What is joiner cache?
what is session override?
what is tha tracesing level? and difference betweentrace in normal and verbose and nonverbose?
Can we get 1st record through Informatica(without sequence number).
What is the different lookup cache(s)?
Explain in detail about scd type 1 through mapping.
In a mapping i have three dimensions. If i want to pass a same surrogate key value to all the three dimensions by using one sequence generator is possible?If the mapping is containing single flow? And in the same case if the mapping is contaning 3 flows for the three dimensions then by using one sequence generator can we populate surrogate key (same value) to all the three dimensions?
How will restrict values in 0-9 and A-Z and a-z and special character.Only allowed these chars otherwise we will reject the records? what is the function we used to restrict...
Briefly define a session task?
What does refresh system mean, and what are its distinctive choice?
Teradata 
