Explain er model, Database Management System

Assignment Help:

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

  • altering tables
  • Dropping table

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

  1. Add column to display the total marks of a particular student
  2. Add column display the Grade of the student >60 First > 40 & < 60 Second < 40 Fail
  3. Group all the students who got Fail grade

Related Discussions:- Explain er model

Consider relational schema and construct algebra query, Consider the follow...

Consider the following relational schema: PERSON (SS#, NAME, ADDRESS) CAR (REGISTRATION_NUMBER, YEAR, MODEL) ACCIDENT (DATE, DRIVER, CAR_REG_NO) OWNS (SS#, LICENSE) Constru

Create the database in oracle using ddl, The Assessment page has a link to ...

The Assessment page has a link to download a conceptual model, and a list of data. You are to map this conceptual model, and create the database in Oracle using your own DDL.  T

Explain query tree represent relational algebra expression, How does a quer...

How does a query tree represent a relational algebra expression?      Ans: This includes transforming an initial expression (tree) into an equivalent expression (tree) that is

Explain the concept of two-phase locking, Explain the Concept of Two-phase ...

Explain the Concept of Two-phase Locking It concerns the positions of locking and unlocking operations in each transaction.  In this protocol every transaction issue lock and u

Need database normalization and database analysis, Developer is required to...

Developer is required to do a task including: - Database Normalization - Database Analysis - ERM Diagram Details can be provided and then you can change your bid accord

Get details of employee working on both comp354 and comp345, Consider the r...

Consider the relations EMPLOYEE(emp#, name) ASSIGNED_TO(project#, emp#) PROJECT(project#, project_name, chief) Express the subsequent queries in Relational Algebra (i) Ge

Explain the functions and components of ddbms, Question 1 Explain the conc...

Question 1 Explain the concept of database recovery management. Explain the different levels of backup used for recovering data Question 2 What are the different types of par

Data definition language, Data Definition Language It organises the dat...

Data Definition Language It organises the data in the form of columns and rows. But what does the data field column of table accumulate? How do you describe it using SQL? Th

What is a transaction, What is a Transaction? A transaction is an even...

What is a Transaction? A transaction is an event which happens on the database. Generally a transaction reads a value from the database or writes a value to the database. If y

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd