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Define Partial Key and Primary Key
A partial key, also known as discriminator, is the set of attributes which can uniquely identify weak entities that are related to similar owner entity. Primary key is a unique key but not comprise null values. An entity set can comprise at most one primary key.
Define average latency time. The average latency time of the disk is one-half the time for a full rotation of the disk.
CREATE YOUR DATABASE TABLES Your database project must have a minimum of four tables. Include the SQL scripts used to create the tables in your documentation. Explain the tables
A database has been designed for this beauty parlour in order for the staff to manage specific things such as bookings made by clients, payments, staff availability, level of exper
What is transaction? Transaction is a unit of program implementation that accesses and possibly updated several data items.
Write an sql statement to find what is the percentage of home policies which are from the state of Arizona out of all Home policies by Policy Value.
what is stracture of dabms
example of bank
what is completeness constrent?
WHY SHOULD NULL IN A RELATION BE AVOID AS possible?
Why is database design important?
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