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What is object identity?
An object retains its identity even if some or all the values of variables or explanations of methods change overtime.
What are the benefits of decomposing a system? The benefits of decomposing a system into subsystems are that after decomposition, each individual component become smaller and e
What subschema expresses ? A subschema expresses the external view. (External schemas are called also called as subschemas)
Define deadlock avoidance. An alternative method for avoiding deadlocks is to needs additional information about how resources are to be requested. Each request requires the s
How to draw an ER diagram to a finance companz
Question 1: a) What is the difference between a non-impact and impact printer? b) Which type of printer is generally used in a supermarket to print your receipt? Describe
What are the properties in a relation ? In a relation Ordering of rows is immaterial and No two rows are identical.
List the steps for converting state diagram to the code. a) Finding major control path b) Finding the conditional statements c) Finding the loops d) Finding error ro
Describe the two types of methods for retrieving rows in Python? Fetchone()- Returns the next row as a sequence Fetch all()- Returns the entire result set like a strin
What are the advantages of creating a table from existing table?
What are the properties of transaction? There are three properties of transactions :- A) Atomicity B) Consistency C) Isolation
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