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What are the properties in a relation ? In a relation Ordering of rows is immaterial and No two rows are identical.
Answer SQL Queries to extract data from data tables and questions on mapping conceptual data models into relational data model.
What is transaction? Transaction is a unit of program implementation that accesses and possibly updated several data items.
Project Description: I would like to get a database of a website which has clients email name and phone number. If you are able to get information from a website, by entering
aggregation
..
1. Use the Invoice table structure shown below to answer the following questions: a) Draw the dependency diagram and identify the primary key and all dependencies, including al
Which is an advantage of view? The Advantages of view is Data security, Derived columns and Hiding of complex queries
An object-oriented design process 1. Define the context and modes 2. Designs the system architecture 3. Identifies the principal system objects 4. Identifies concurrency in
Explain the integrity constraints: Not Null, Unique, Primary Key with an example each. Is the combination 'Not Null, Primary Key' a valid combination. Justify. Not Null - Shou
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