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Explain Composite attribute in SQL ? Composite attribute: A composite attribute has many components, each of that is atomic or composite.
How does the system cope up with a record crash when recovery is going on after the first crash? Ans: In a system the undo and redo operations are needed to be idempotent to c
what is physical data structure
What is object containment? References among objects can be used to model dissimilar real-world concepts.
In an E-R diagram an entity set is represent by? In an E-R digram entity set is represted by rectangle.
State the functional approach of object oriented methods Moving from a functional approach to an object oriented one needs a translation of functional model elements into objec
What is the use of unique function? UNIQUE function: If UNIQUE is specified then only unique values are used to computed the mean.
Differentiate between logical database design and physical database design. Show how this separation leads to data independence? Basis Logical Databas
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)
I need to Map an E-R diagram to a relational schema
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