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Question 1 Explain ER model
Question 2 What are the characteristics of a computer provided information?
Question 3 What are facts and guidelines to be considered when selecting a character set?
Question 4 Explain
Question 5 Write an SQL query to create the student table with the necessary columns and check whether that column allows null values.
Question 6 Create a student table with the following attributes Student name, student roll no, 5 different subjects. Write SQL query for the following conditions
Explain the term- Query. Queries are used to repossess and show specific records in a table. They can also be used to show specific fields of specific records, which meet the co
Let us now talk about the relational operations: SELECT The select operation is used to select few specific record from the database based on different criteria, This is a un
Server Control It is usual to control access to the data via the front end application, for example by displaying data as ‘read only'. This part of the assignment illustrates ho
What are uncommitted modifications? The immediate-modification technique permits database modifications to be output to the database whereas the transaction is still in the act
One-way Associations If an association is only traversed in single direction, then it is known as one-way association. It is implemented as a pointer or an attribute which con
Consider the following relational schema: PERSON (SS#, NAME, ADDRESS) CAR (REGISTRATION_NUMBER, YEAR, MODEL) ACCIDENT (DATE, DRIVER, CAR_REG_NO) OWNS (SS#, LICENSE) Constru
Explain Growing Phase of locking Growing Phase: In this phase the transaction can only obtain locks, but cannot release any lock. The transaction enters the growing phase as so
Let us first describe the term relationships. What Are Relationships? A relationship can be defined as: A set of associations or connection, or A rule for communic
What is first normal form? The domain of attribute must contain only atomic (simple, indivisible) values.
Explain Object oriented Model ? Object Oriented Model - This model is based on the object-oriented programming language paradigm. It involves the features of OOP such as inhe
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