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What are the technique to define a schema completely ?
A schema is completely define by DDL and DML query language.
Explain the Aggregation implies concurrency Concurrency actually is: This in objects can be identified by the way they change state. Present objects can change state independen
what does glory be mean
WHY SHOULD NULL IN A RELATION BE AVOID AS possible?
Ask question #Minim 100 words accepted#what is recovery management component in database management system and how it is useful
What is a candidate key? Minimal super keys are known as candidate keys.
Show a centralised schema to support the operation of the system you have chosen, including in particular: the product catalogue; the outlets and respective stocks; customer record
Describe the storage structure of indexed sequential files and their access method. Ans: Storage structure of Indexed Sequential files and their access: To achieve fast rand
Query Processor The query language processor is responsible for taking query language statements or shifting them from the English-like syntax of the query language to a form
Give the limitations of SQL authorization. The code for checking authorization becomes intermixed with the rest of the application code. Implementing authorization by applic
Relations create the database. They must satisfy various properties, like no duplicate tuples, no ordering of tuples, and atomic attributes, etc. Relations that satisfy these basic
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