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What is the way a particular application views the data from the database that the application uses? Sub schema is the way a particular application views the data from the data
Which database level is closest to the users? External database level is closest to the users.
Explain the cartesian product in Database Management System
Find the names of all Albums that have more than 30 tracks. Result: (name: varchar(255))
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
Consider the E/R schema with weak entity sets shown below. Come up with the SQL CREATE TABLE statements (with appropriate primary key, unique and foreign key constraints). Include
recovey techniques based on deferred update and immediate update
Can you assist me in Database management system? I need help in my courses, please email me at and get back me soon...
Optimistic Concurrency Control Is locking the only way to stop concurrency related problems? There exist some other ways too. One such way is known as an Optimistic Concurrency
What subschema expresses ? A subschema expresses the external view. (External schemas are called also called as subschemas)
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