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Types of data independence Data independence can be classified into the following two types: Physical Data Independence: This means that for any change made in the physi
find a name whose address is erode from student table
Backward Recovery (UNDO): In this system the uncommitted changes made by a transaction to a database are undone. Instead the system is reset to the last consistent state of databa
how many hourse have been spent on a certain project
What is conceptual schema? The schemas at the view level are known as subschema that describe dissimilar views of the database.
Which component is not included in database environment ? A users component is not included in database environment.
Consider the subsequent relation schemes: Project (Project#, Project_name, chief_architect) Employee (Emp#, Empname) Assigned_To (Project#, Emp#) Give expression i
Draw an EER diagram that captures the "is-a" hierarchy of students in another simple database. The database captures both the "basic" information (say, student ID and student name)
QUESTION (a)(i) Define the term database. (ii) How is it different from a database management system? (b) What is the difference between an entity and an attribute? (c
Describe domain constraints. Domain constraints contain entity integrity and referential integrity. The domain is a set of values that might be assigned to an attribute. The en
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