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Question 1
Draw a Data Flow Diagram for a University scenario
Question 2
Discuss the following with suitable examples
Question 3
Discuss the following
Question 4
Explain the process of creating databases in SQL Server 2005 with suitable examples
Question 5
Write a query to create a table called "Persons" that contains five columns: P_Id, LastName, FirstName, Address, and City
Question 6
Given the following table STOCK. Write a query to find the rows in table STOCK
Table
STOCK---------+-------------------------+--------------------+| RIC | COMPANY | LISTED_ON_EXCHANGE |+---------+-------------------------+--------------------+| 6758.T | Sony | T || GOOG.O | Google Inc | O || GS.N | Goldman Sachs Group Inc | N || INFY.BO | InfoSys | BO || VOD.L | Vodafone Group PLC | L |+---------+-------------------------+--------------------+Query with correct logic
Drawbacks of Database systems ?
coventions for displaying an ER schema as ER diagram
If R1 and R2 are two union compatible relations or functions, then the result of R3 = R1 ∩R2 is the relation that contains all tuples that are in both the relations In other words,
Given the following relations Vehicle (Reg_no, make, colour) Person(eno, name, address) Owner(eno, reg_no) Write expressions in the relational algebra to answer the following
Describe integrity constraints? Integrity Constraints - A database is just as excellent as the information stored in it, and a DBMS must therefore help avoid the entry of inc
Dependency Preservation It is obvious that the decomposition must be lossless so that we do not lose any information from the relation that is decomposed. Dependency preservati
What's the difference between a primary key and a unique key? Both primary key and unique key enforces uniqueness of the column on which they are explained. But by default prim
Write short note on Data models? Data models: A data model is an abstract model which elaborates how data is represented and accessed. The term data model has two commonly ac
Describe entity referential integrity and integrity. Give an example of each. Entity Integrity Rule - If there is a attribute A of relation R is a prime attribute of R then A
Automated system for appointment with sms and call confirmation with service providers and user has to be initiate automatically. After selecting time and date to use service, s
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