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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
how the string works as keyword?
What subschema expresses ? A subschema expresses the external view. (External schemas are called also called as subschemas)
What is the difference between serial and sequential files? How searching is applied on both? Ans: A serial file is one where the records have been stored in the order where
What are the two types of errors? The two types of errors are: a) Logical error b) System error
What is Relational calculus? Relational calculus is a Non- Procedural language.
Consider the E/R schema with weak entity sets shown below. Come up with the SQL CREATE TABLE statements (with appropriate primary key, unique and foreign key constraints). Include
Database Errors: An error is said to have occurred if the implementation of a command to manipulate the database cannot be successfully finished either due to inconsistent data or
What do you understand by transitive dependencies? Define with an example any two problems that can take place in the database if transitive dependencies are available in the datab
Explain the function of Object model Object model describes the classes of objects in system, including their attributes and operations which they support. The analysis object
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