1. Unit 33 Data
Analysis and
Design (Final
Submission)
By
Priscilla Wilson
Due Date: 15/05/15
Data No: 895070
2. Priscilla Wilson Date: 15/05/15 Data No: 895070
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TABLE OF CONTENTS
LEARNING OBJECTIVE 2 #
INTRODUCTION 2
2.1 DESIGN A RELATIONAL DATABASE SYSTEM TO MEET A GIVEN
REQUIREMENT 2-3
2.2 BUILD A RELATIONAL DATABASE SYSTEM BASED ON A PREPARED DESIGN 3-4
2.3 APPLY A RANGE OF DATABASE TOOLS AND TECHNIQUES TO ENHANCE THE
USER INTERFACE 5-6
LEARNING OBJECTIVE 3 #
3.1 EXPLAIN THE BENEFITS OF USING THE MANIPULATION AND QUERY TOOLS
IN A RELATIONAL DATABASE TOOL 7
3.2 IMPLEMENT A QUERY LANGUAGE INTO THE RELATIONAL DATABASE 8-9
3.3 CRTICALLY EVALUATE HOW MEANINGFUL DATA HAS BEEN EXTRACTED
THROUGH THE USE OF QUERY TOOLS 10-12
LEARNING OBJECTIVE 4 #
4.1 CRITICALLY REVIEW AND TEST A RELATIONAL DATABASE SYSTEM 12-13
4.2 CREATE DOCUMENTATION TO SUPPORT THE IMPLEMENTATION AND
TESTING OF A RELATIONAL DATABASE SYSTEM 13
4.3 CREATE USER DOCUMENTATION FOR A DEVELOPED RELATIONAL
DATABASE SYSTEM 14-19
4.4 EXPLAIN HOW VERIFICATION AND VALIDATION HAS ADDRESSED 20-21
4.5 EXPLAIN HOW CONTROL MECHANISMS HAVE BEEN USED 21
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INTRODUCTION
Below shows the organization which I will be designing a relational
database. This organization supplies party and wedding supplies such as
balloons, personalized products i.e. mugs and wallets, table decorations
etc. White wedding and party supplies is based in the UK and ships its
products worldwide.
Whites wedding supplies have their products displayed in four currencies
which are for the following countries/continents; America, United
Kingdom, Europe and New Zealand since they trade internationally.
The four products they display their currency in are the following listed
below;
US Dollar
British Pound
Euro
New Zealand Dollar
Whites wedding supplies has commissioned me to design a relational
database.
2.1 DESIGN A RELATIONAL DATABASE TO MEET A GIVEN
REQUIREMENT
Below shows the different types of requirements for my relational
database. This includes transaction requirements and data requirements.
Data Requirements
Branch/s
White wedding supplies is based in United Kingdom but trades across the
following continents and countries; New Zealand, United Kingdom United
States and Europe. For customers based in the UK they can order online
and collect at the Warehouse in Sheffield, in addition to that any products
which contain alcohol can only be delivered and purchase in the UK for
UK residents. The Sheffield warehouse includes a unique branch number,
address (street, city, and postcode), telephone number, name of the
member of staff who currently manages the warehouse and no of
employees. For international deliveries there are no warehouses where
customers cannot pick up their goods; in this case it will be delivered to
their resident.
Staff
Members of staff with the role of Supervisor are responsible for the day-
to-day activities of an allocated group of staff called Assistants. The data
stored on each member of staff includes staff number, name, address,
position, salary, date hired, email address, mobile no, telephone no and
contract hours. The staff number is unique across the warehouse of
White Wedding’s and Party Supplies.
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Clients
White’s Wedding and Party Supplies refers to members of the public
interested in purchasing party supplies as clients. To become a client, a
person must first register online at the White’s Wedding and Party
Supplies. The data stored on clients includes client number (generated
automatically), name, telephone number and email. There are additional
fields which include country, postcode, bank/building society name,
credit/debit card, issue Date, expiry date, billing address, billing city,
billing postcode, order no and billing country. The client number is unique
across the warehouse in Sheffield.
Transaction Requirements
Data Entry
• Enter the details of a new member of staff at the warehouse
(such as Becky Bedford at S001).
Update/deletion
• Update/delete the details of the warehouse.
• Update/delete the details of a member of staff at the
warehouse.
Data queries
• List the name, position, and salary of staff at the warehouse,
ordered by staff name.
• List the names of staff supervised by a named supervisor.
• Identify the total number of orders in each city.
• Identify the total number of orders assigned to each member
of staff at the warehouse.
• List the number, name, and telephone number of clients and
their order preferences.
2.2 BUILD A RELATIONAL DATABASE BASED ON A
PREPARED DESIGN
Based on the research which I conducted about White Wedding and party
supply I found the following entities which are branch, staff, client, order
and product. Below shows the attributes for the above entities;
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2.2 BUILD A RELATIONAL DATABASE BASED ON A
PREPARED DESIGN
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2.3 APPLY A RANGE OF DATABASE TOOLS AND
TECHNIQUES TO ENHANCE THE USER INTERFACE
To enhance the look of the user interface I have used forms. The reason I
have used these is that they are more user friendly and it is easier to
navigate around them. Below shows an example of forms which I have
produced in my database. I have added buttons so users can edit, add
and remove data in addition to that I have added a hyperlink to the
company website so that users can refer to things
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3.1 EXPLAIN THE BENEFITS OF USING THE MANIPULATION
AND QUERY TOOLS IN A RELATIONAL DATABASE TOOLS
One benefit of using manipulation and query tools in a relational database in Microsoft
Access is that it generates the SQL for you. If you want to create a query in access it will
direct you to a query builder, here you can set what you want to see in the query and place a
limit on how many records you want to see. The good thing about this is that you do not have
to learn SQL in order to generate queries.
Another benefit of using manipulation and query tools in a database is that you change data
within a table in the database without physically going to the table or form and change it. In
addition to that it can be used to extract specific information from a database quickly.
Another benefit of using manipulation and query tools is that there is no complex coding
required and is fairly easy to use and learn.
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3.2 IMPLEMENT A QUERY LANGUAGE INTO THE
RELATIONAL DATABASE
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3.3 CRITICALLY EVALUATE HOW MEANINGFUL DATA HAS
BEEN EXTRACTED THE T HROUGH THE USE OF QUERY
TOOLS
Simple queries (Figure 1)
(figure 2)
Complex Queries (NOTE: the complex queries I have produced show
relations across two tables) Figure 3
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From this query we can use this information to see which branch is
getting the most orders and then management can see whether they
need to recruit more staff members or expand so that they can meet the
customers demand.
(Figure 4)
The purpose of this query is to see how orders where placed before the
5th
May 2015.
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(Figure 5)
Using this information we can inform staff who are currently working in the
London area that we have vacancies in our other London branch which need to
be filled up. If they say that they are not willing to relocate then we release the
vacancies externally on or company website for the members of public.
4.1 CRITICALLY REVIEW AND TEST A RELATIONAL
DATABASE SYSTEM
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4.2 CREATE DOCUMENTATION TO SUPPORT THE
IMPLEMENTATION AND TESTING OF A RELATIONAL
DATABASE SYSTEM
If we refer back to 3.3 we created a number of queries which gave
specific information. The purpose of queries is to give us specific
information which we require quickly; we used the product, client and staff
tables to create queries.
The information which we extracted from the queries are proven to be
very useful as because we can use the information we got from the client
table to retain customers, we can use the information we got from the
staff table to show immigration officers that we hired employees
according to immigration law and finally we can use the information we
got from the product table to see which products are low on stock. In
addition that if we compare the product table to the order table we can
find which products are popular amongst our clients.
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4.3 CREATE USER DOCUMENTATION FOR A DEVELOPED
RELATIONAL DATABASE SYSTEM
