What is data modelling
What is meant by the data modelling?
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Data modelling represents the real world set of the data structures or entities and their relationship in their data models, needed for database.
There exist various types of modelling:
a) Logical data modelling. b) Conceptual data modelling. c) Physical data modelling. d) Relation data modelling. e) Enterprise data modelling. f) Dimensional data modelling.
Illustrates the properties of Cursors in brief?
Define the market structures and price output determination in words of Clark and Clark.
Why use references quite than pointers within the public API, mainly for arguments that are modified?
Explain what needs to happen to convert a relation to third normal form?
What do you understand by the term concurrency control in DBMS?
Homework E-R Modeling Follow a MOVIE database where data is recorded about the movie industry. The data needs are summarized as follows: _ Each and every movie is identified by title & year
Explain how teradata ensures that there are no duplicate rows being inserted when it’s a SET table?
What is meant by the parameter file?
What is a derived (artificial) primary key? When must this be used?
What is the simplest sorting method to utilize in data structures?
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