A Choose Your Own Adventure Lecture

By Mr. Matzen

Once upon a time, Mr. Matzen Once upon a time, Mr. Matzen had a part time job working at…had a part time job working at…

ABank

AMusicStore

At that music store Mr. Matzen…At that music store Mr. Matzen…

Worked diligently everydayWorked diligently everyday

Had a lot of free time to thinkHad a lot of free time to think

Played FreeCell and listened to musicPlayed FreeCell and listened to music

As the employee of the year As the employee of the year competition approached Mr. Matzen…competition approached Mr. Matzen…

Began looking for a way to winBegan looking for a way to win

Gave up immediately and quitGave up immediately and quit

Starting sabotaging the work of other emplStarting sabotaging the work of other employeesoyees

The first thing Mr. Matzen tried…The first thing Mr. Matzen tried…

Was forgingtimecards tooverstate thehours of other

employees

Was drawingsilly pictures ofthe boss on the

counter andblaming others

Without a job Mr. Matzen was Without a job Mr. Matzen was hired as a bank teller. On his hired as a bank teller. On his

first day of work he wore…first day of work he wore…

Appropriatebusiness attire

A warrior outfit

Mr. Matzen spent his time Mr. Matzen spent his time thinking about…thinking about…

Whether Cheetoswere snacks or

chips

How to make hisjob easier

The customers kept interrupting The customers kept interrupting FreeCell so Mr. Matzen…FreeCell so Mr. Matzen…

Put out theclosed sign

an hour early

Decided to workon making hisjob easier, sohe could play

After several long windedAfter several long windeddebates Mr. Matzen started…debates Mr. Matzen started…

Writing a letterto Frito Lay

Yelling atcustomers to

get theiropinions

Unfortunately the boss showed Unfortunately the boss showed up unexpectedly and Mr. Matzen up unexpectedly and Mr. Matzen

was fired on the spot.was fired on the spot.

Let’s try adifferentcareer.

Mr. Matzen decided that the best Mr. Matzen decided that the best way to win the competition was…way to win the competition was…

Working lotsof overtime

Creating abetter wayto sort the

merchandise

PLAN A PLAN B

The hours of overtime took a toll The hours of overtime took a toll on Mr. Matzen’s grades so he on Mr. Matzen’s grades so he had to reconsider his decision.had to reconsider his decision.

PLAN B

At that time the store did not use At that time the store did not use a computer to monitor inventory. a computer to monitor inventory. The store paid $3 for each CD The store paid $3 for each CD

and $5 for each DVD. The sales and $5 for each DVD. The sales price was decided by the clerk. price was decided by the clerk. All CDs and DVDs were placed All CDs and DVDs were placed

alphabetically in the store.alphabetically in the store.

What were some of the What were some of the problems with this system?problems with this system?

Don’t know what was in inventory.Don’t know what was in inventory.

Don’t know the quantity in inventory.Don’t know the quantity in inventory.

Paid the same for Eminem and Paula AbdulPaid the same for Eminem and Paula Abdul

Inconsistent pricing of identical items.Inconsistent pricing of identical items.

All styles of music are mixed together, All styles of music are mixed together, making it more difficult to sort and more making it more difficult to sort and more difficult to find items.difficult to find items.

What could Mr. MatzenWhat could Mr. Matzendo to fix these problems?do to fix these problems?

1. Create a table with Microsoft Word

2. Create a table with Excel

3. Create a table with Access

There is a better answer.There is a better answer.

A database is correct but why?A database is correct but why?

A table in a database appears similar to a A table in a database appears similar to a table in spreadsheet, but the function is table in spreadsheet, but the function is different.different.

A spreadsheet is used to do mathematic A spreadsheet is used to do mathematic calculations on the data assembled.calculations on the data assembled.

A database is used to do easy searches A database is used to do easy searches (queries) of the data assembled.(queries) of the data assembled.

Knowing he needed to use a Knowing he needed to use a database Mr. Matzen…database Mr. Matzen…

Researcheddatabasescarefully

Dove inhead first to

Access

During the research he read During the research he read about 4 database components.about 4 database components.

TableTable – a collection of related information – a collection of related information organized in columns and rowsorganized in columns and rows

Query – an instruction to do a job, such as Query – an instruction to do a job, such as locating records with certain characteristicslocating records with certain characteristics

Form – a database object you can use to Form – a database object you can use to enter, edit, view, and print database info.enter, edit, view, and print database info.

Report – a database object that presents Report – a database object that presents database information in an accessible waydatabase information in an accessible way

Mr. Matzen opened Access and Mr. Matzen opened Access and became frustrated so he…became frustrated so he…

SangKaraoke to

let off steam

Decided toresearch

databases

Boo himoff stage.

Applaudloudly.

Fine. You don’t like my singing? Fine. You don’t like my singing? Then take some notes over…Then take some notes over…

Databases

The fame quickly went to Mr. The fame quickly went to Mr. Matzen’s head and he…Matzen’s head and he…

Tried acomedyroutine

Tried hishand atacting

Quit yourjob. A star

is born.

Get back todatabases.

Quit yourjob. A star

is born.

Get back todatabases.

After quitting his job Mr. Matzen After quitting his job Mr. Matzen realized he had no talent and…realized he had no talent and…

Looked foranother job

Began thedatabaseresearch

Creating a table was the first step.Creating a table was the first step.The rows are Records (all the data for an The rows are Records (all the data for an individual item)individual item)

The columns are Fields (the different types The columns are Fields (the different types of data we want to know)of data we want to know)

Record

Field

What fields need to be included What fields need to be included in the CD/DVD database?in the CD/DVD database?

ArtistArtist

AlbumAlbum

Price Buy UsedPrice Buy Used

Price Buy NewPrice Buy New

Price Sell UsedPrice Sell Used

Price Sell NewPrice Sell New

Number of CopiesNumber of Copies

Number of Copies Number of Copies DesiredDesired

Trade ValueTrade Value

CD or DVDCD or DVD

StyleStyle

Mr. Matzen entered all of this Mr. Matzen entered all of this information into a database andinformation into a database and

Everythingworked

perfectly

He forgotone little

thing

Mr. Matzen started bragging Mr. Matzen started bragging about this system to everyone.about this system to everyone.

Soon he atehis words.

He even helda press

conference.

At this press conference, a At this press conference, a reporter asked Mr. Matzen…reporter asked Mr. Matzen…

What aboutspecial editions?

Why are youso tall?

Now tell usabout theSpecialEditions.

I’m so confused.Give us morenotes please.

What about Special Editions or What about Special Editions or Remakes? How do you Remakes? How do you

differentiate between two items differentiate between two items with the same name?with the same name?

Give usa hint.

No idea. Giveus the answer.

Should we add a field or change Should we add a field or change a field we already have?a field we already have?

Change Add

Should we add a word or a Should we add a word or a number?number?

Word Number

What number should we add?What number should we add?

Create anumber

Barcode

The barcode is the key. An item The barcode is the key. An item is specifically identified by that is specifically identified by that number. It is unique to each number. It is unique to each version or edition of an item.version or edition of an item.

So why dowe care?

What is abarcode?

Here is a barcode.Here is a barcode.

Please lectureabout Wal-Martand barcodes

Let’s get backto databases

The story of Wal-MartThe story of Wal-Mart

Now on todatabase

Why do you care about barcodes? Why do you care about barcodes? So we can understand… So we can understand…

PrimaryKeys

Wal-Mart’sSuccess

A primary key is the part of a A primary key is the part of a database unique to one item. database unique to one item.

When connecting two databases When connecting two databases the primary key is needed as a the primary key is needed as a

reference to match items.reference to match items.

Enough talk.Let’s get on

the computers.

How aboutanother

example.

At that time the bank tracked At that time the bank tracked accounts by social security accounts by social security

number. Last name, first name, number. Last name, first name, social security number, and social security number, and

address were the only address were the only information stored on the information stored on the

computer.computer.

What were some of the What were some of the problems with this system?problems with this system?

No room for multiple account owners.No room for multiple account owners.

Does not differentiate between account Does not differentiate between account types.types.

Does not specify the account.Does not specify the account.

What could Mr. MatzenWhat could Mr. Matzendo to fix these problems?do to fix these problems?

1. Alter a table with Microsoft Word

2. Alter a table with Excel

3. Alter a table with Access

There is a better answer.There is a better answer.

A database is correct but why?A database is correct but why?

A table in a database appears similar to a A table in a database appears similar to a table in spreadsheet, but the function is table in spreadsheet, but the function is different.different.

A spreadsheet is used to do mathematic A spreadsheet is used to do mathematic calculations on the data assembled.calculations on the data assembled.

A database is used to do easy searches A database is used to do easy searches (queries) of the data assembled.(queries) of the data assembled.

Knowing he needed to use a Knowing he needed to use a database Mr. Matzen…database Mr. Matzen…

Researcheddatabasescarefully

Dove inhead first to

Access

During the research he read During the research he read about 4 database components.about 4 database components.

TableTable – a collection of related information – a collection of related information organized in columns and rowsorganized in columns and rows

Query – an instruction to do a job, such as Query – an instruction to do a job, such as locating records with certain characteristicslocating records with certain characteristics

Form – a database object you can use to Form – a database object you can use to enter, edit, view, and print database info.enter, edit, view, and print database info.

Report – a database object that presents Report – a database object that presents database information in an accessible waydatabase information in an accessible way

Mr. Matzen opened Access and Mr. Matzen opened Access and became frustrated so he…became frustrated so he…

Took a trip toGraceland

Decided toresearch

databases

All ShookUp At The

King’sGrave.

HeartbreakHotel With

JoshuaJackson.

SuspiciousMinds.

Get back todatabases.

Don’t BeCruel.

Get back todatabases.

Creating a table was the first step.Creating a table was the first step.The rows are Records (all the data for an The rows are Records (all the data for an individual item)individual item)

The columns are Fields (the different types The columns are Fields (the different types of data we want to know)of data we want to know)

Record

Field

What fields need to be included What fields need to be included in the bank account database?in the bank account database?

Account numberAccount number

Primary Owner 1Primary Owner 1

Primary Owner 2Primary Owner 2

Secondary Owner 1Secondary Owner 1

Secondary Owner 2Secondary Owner 2

Account typeAccount type

Social Security Social Security NumberNumber

AddressAddress

Phone NumberPhone Number

The account number is used to The account number is used to identify the record instead of the identify the record instead of the

social security number. In social security number. In Access it can be the primary key.Access it can be the primary key.

PrimaryKey?

Access?

Yes Access. You must have Yes Access. You must have known that was what all this run known that was what all this run

around was leading to.around was leading to.

Right, so whatis a primary key.

I thought itwas leadingto a free day.

Listen! Just drop the whole free Listen! Just drop the whole free day thing and get on with it.day thing and get on with it.

PrimaryKey

PrimaryKey

I’m tired of giving you choices.

Why would you wear this to work?Why would you wear this to work?

Just a joke.We can be

serious now.

I see nothingwrong with this

outfit.

Nothing wrong. You just are Nothing wrong. You just are wasting time now.wasting time now.

On to a banking scenario.