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What does the extract statement do in extract datasets? The data is written to virtual memory by extract commands.
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
Consider an information system designed for an online company which provides IT products and services These include desktops, laptops, networking products, IT books, parts, and
what is definition hierarchical data model
What is a guard condition? Explain it with a suitable example. The guard-condition is a Boolean expression written with respect to parameters of triggering event and attributes
What is database Trigger? A database trigger is a PL/SQL block that can explained to automatically execute for insert, update, and delete statements against a table. The trigge
What are the two statements regarding transaction? The two statements regarding transaction of the form are:- A) Begin transaction B) End transaction
Relationship between Security and Integrity: Database security usually refers to access, while database integrity refers to avoidance of accidental loss of consistency. But usually
Describe the host language? Host Language: You could write applications along with SQL statements embedded inside a host language. The SQL statements give the database inter
What is document scanning and imaging? Document scanning and imaging, or digital archiving, is the method of scanning a document into a digital image to archive and retrieve a
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