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What is relationship instance ?
Relationship Instance - A relationship is a relation between two or more entities. An instance of relationship set is a set of relationships.
A TDMS project plan is not a typical Information Technology project plan; therefore, a traffic data project has several unique characteristics: Traffic data management system
what is union compatable?
Give the levels of data abstraction? There are three levels of Data Abstraction a) Physical level b) logical level c) view level
Consider the following frequency counts of some itemsets in a transaction database r : freq({A}, r) = 0.405 freq({B}, r) = 0.510 freq({C}, r) = 0.303 freq({A
Explain controlled redundancy? Controlled redundancy : The replication of data within the data warehouse for the purposes of improved data access or understand ability.
What are the different approaches for database design? There are two basic approaches for database design which are as follows: Attribute driven: It compiles a list of att
What is Relational DBMS This is our subject of study. A DBMS is relational if the data is organized into relations, that is, tables. In RDBMS, all data are kept in the well-kno
why older data models are being replaced by new data models.
WHAT IS SQL
draw er diagram using entities crop,employee,department,plot,cultivation plan,machinery,seed,fertilizer
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