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Consider a database application that deals with an Employee relation with information such as SIN, name, data of birth (DOB), and DID (the ID of the department at which the employe
what is union compatable?
what is primary key
Design a gennalization and specialization hierarchy for an automobile sales company
why older data models are being replaced by new data models.
The State of Newyork certifies firefighters throughout state keep track all of them, as well as the state’s of fire departments. Each fire department has unique department number
Construct a clean ans concise ER diagram for the database indicating the cardinality mapping for Employee management syatem
List the SQL domain Types? SQL supports the following domain types. 1) Char(n) 2) varchar(n) 3) int 4) numeric(p,d) 5) float(n) 6) date.
What is B-Tree? A B-tree eliminates the redundant storage of search-key values .It permits search key values to appear only once.
explain normalization,and give the examples 1NF,2NF,3NF,BCNF.AND FUNCTIONAL DEPANDENACY AND DECOMPOSITION TECHNIQUES.
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