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What is a Built-in
A notation of identity is built-into the data model or programming language and no user-supplied identifier is needed. This form of identity is used in object oriented systems.
Define seek time. The time for repositioning the arm is known as the seek time and it enhances with the distance that the arm is known as the seek time.
What is a recursive relationship? Give an example not used in the text. A recursive relationship is a relationship among an entity and itself. For example, given the entity PER
What function divides one numeric expression by another and returns the remainder? MOD function divides one numeric expression by another and returns the remainder.
INTRODUCTION Databases and database systems have become an essential part of our daily life. We encounter many activities that involve some interaction with a database almost
Set Difference If R1 and R2 are two union compatible relations or relations then result of R3 =R1- R2 is the relation that have only those tuples that are in R1 but not in R2.
Objectives After reading this part, you should be able to: Modify, create, and delete database schema objects; Update database using SQL command; Retrieve data f
What is known as clustering file organization? In the clustering file organization, records of several dissimilar relations are stored in the similar file.
What are the two types of errors? The two types of errors are: a) Logical error b) System error
Which data manipulation command combines the records from one or more tables ? JOIN data manipulation command combines the records from one or more tables.
create an er diagram for production management in film industry
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