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What is the difference among a database schema and a database state? The collection of information stored in database at particular moment in time is known as database state a
State as Location within a Program In this traditional approach, location of control inside a program totally defines the program state. Any finite state machine may be implem
Describe the algorithm for updating indices for a single level index when a record is (i) Inserted (ii) deleted What will be the modification if there are multilevel in
Insertion Anomaly: Inability to show certain information-The primary key of the over relation be (enrolment number, Cno). Any new tuple to be inserted in the relation should have
What is the full form of ODBC ? ODBC stands for Open Database Connectivity.
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
I have been given 8 differebt data warehouseing failure case studies. I need to question 4 questions for each
What is a SELECT operation? The select operation selects tuples that please a given predicate. We use the lowercase letter σ to denote selection.
Explain the Recoverable Schedule A recoverable schedule is one in which for each pair of transactions Ti and Tj such that Tj reads a data item formerly written by Ti, the comm
#question.what is mapping constraints and types?.
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