Define relations in tables and define primary keys, Database Management System

Assignment Help:

Consider the subsequent relations along with keys underlined

Street (name, location, city)
House (number, street_name)
Lives (name, house_number)
Define the above relations as tables in SQL making real world assumptions about the kind of the fields. Define the primary keys and the foreign keys.

Create table street (name character(30) primary key, location character(30), city character(30));
Create table house( number integer primary key, street_name character(30) references street(name));
Create table lives ( name character(30) primary key, house number integer references house(number));


Related Discussions:- Define relations in tables and define primary keys

Homework help, Draw an entity relationship diagram (ERD) for the following ...

Draw an entity relationship diagram (ERD) for the following situation: A company has a number of employees. Each employee is identified by an Employee_Id. The company wants to st

Define integrity, (a) Explain briefly the three parts of a relational Model...

(a) Explain briefly the three parts of a relational Model. (b) Contrast the following terms with an appropriate example: (i) stored attribute v/s derived attribute (ii) en

Data integrity, You are required to implement integrity constraints within ...

You are required to implement integrity constraints within the database to enforce the following requirements:  For Projects: Start date must be supplied. Start date cannot be i

Relational declarative database language environment, Server Control It ...

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

Design and implement a database system, Safe Banking is a Canberra based cr...

Safe Banking is a Canberra based credit union, which has several branches around Canberra and Queanbeyan. YOU have taken over Safe Banking. YOU need to create a database that organ

What are the basic merits of decomposition, The basic merits of decompositi...

The basic merits of decomposition. The Advantages of Decomposition 1.  Separate person can work on each subsystem. 2.  A particular software engineer can specialize in a

Determine the strong and weak entity, Determine the Strong and Weak Entity ...

Determine the Strong and Weak Entity Based on the method of foreign key, there might be arise a situation when we have to relate an entity having a primary key of its own and a

Give detail description on transactions, Give detail description on Transac...

Give detail description on Transactions. - Using transactions we can group all SQL commands into a single unit. - Transaction begins with some task and finishes only when a

Field, examples of fields in a database

examples of fields in a database

How many types of data independence have, Types of data independence D...

Types of data independence Data independence can be classified into the following two types: Physical Data Independence: This means that for any change made in the physi

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