Download Polaris Database Theory

Enter slide title here
► Enter bullet text here
► Second level
● Third level
Polaris Database Theory
Kellie Conner
Customer Product Advocacy Manager
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The
Polaris
Database
Enter
slide title
here
► Introduction
► Enter
bullet text hereto
the Polaris database
► Second level
●
a relational database is structured
● How
Third level
● Data types
► Linking tables
► Keys
► Join types
► Learning to choose your tables
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Polaris
Database
Enter slide
title hereStructure
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text here
Fields
► Second level
► Logical
Groupings
of
● Third
level
fields
► Each table has at least
one common field that
links it to another table
► Multiple tables cut down
on repetition
► Where the data is stored
► Used as unique identifiers
to link tables (keys)
► Can have many different
formats
► String
► Integer
► Date
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Table
and title
Field
Descriptions
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here
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Table Name
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● Third level
Field Names
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Polaris
Database
Enter slide
title hereStructure
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► Inside
thelevel
table, the data is organized into records and fields
► Second
● Third level
► Each record consists of data entered into multiple fields
► The table contains as many records as are needed to represent
the data
► Also known as rows and columns
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Data
Enter Formats
slide title here
► Data can have many different formats
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► Second level choose the format to reflect the required data type,
► Programmers
● Third level
and also to allot dedicated space in the field
► Common data types include: bit, tiny int, small int, Char, Varchar,
Numeric, text, identity, DateTime
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Data
Enter Formats
slide title here
► Bit – either a 1 or a 0
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► Second
level
► Tiny
Int / Small
Int / Int – interger data of various lengths
● Third level
► Chars (20) – allows for 20 dedicated spaces
► VarChar (200) – allow up to 200 spaces, but will resize the field if
you use only 50
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Data
EnterFormats
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►
only
numeric data permitted
► Number
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here
► Second level
► Will
allow
● Third
levela decimal
► Text – will allow extreme amounts of data
► Indentity – Sql will automatically assign the record (row) number
► DateTime – will record up to the second
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Linking
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► Tables are linked together so that records from one table will
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match
thelevel
related records in another table
► Second
● Third level
► Use a field that is common to both tables, and uniquely identifies
the data
► This is called a key
► Tables can only be linked by like data types
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Database
Enter slide keys
title here
► There are three basic types of keys
► Enter bullet text here
► Primary
Second level
►
● Third level
► Foreign
► Combination
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Primary
Keys
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title here
► Enter bullet text here
► A ►primary
key is a unique
Second level
● Third level
identifier for a record in a table
► Often named with ID at the end
of the field name
► Table can have only one primary
key
► A field can be a primary key in
more than one table
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Foreign
Keys
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title here
► A foreign key is a unique
► Enter
bulletof
texta here
identifier
record
in
► Second level
● Third
level(where it is its
another
table
own primary key)
► Often named with ID at the
end of the field name
► Tables can have more than
one foreign key
► Fields can be a foreign key
in more than one table
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Combination
Enter slide titleKeys
here
► A combination key is also a
identifier
for a record in
► unique
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text here
► Second level
a table
● Third level
► This key requires more than
one field to identify the
‘uniqueness’ about the record
in the table
► A combination key can have
as many fields as are required
to identify the ‘uniqueness’ of
the record
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Linking
Tables
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title here
► FROM
Table
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bullet text
here
TO Table
► Second level
● Third level
► Primary Table
Lookup Table
► Left Table
Right Table
► Different terminology for the same thing
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Link
EnterRelationships
slide title here
► Enter bullet text here
► In► every
there can only be one primary table
Secondrelationship
level
● Third level
► Multiple lookup tables are permitted
► You may have more than one relationship in your query or
report
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Link
EnterRelationships
slide title here
►
of here
link relationships
► Two
Enter types
bullet text
► Second level
● Third level
► Primary Key
Primary Key
► Primary Key
Foreign Key
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Data
Enter Relationships
slide title here
►
to 1:
fortext
every
► 1
Enter
bullet
here record in the primary table, there is a match in
► Second level
the lookup
● Third table
level
► ie. Items to material types
► 1 to many: for every record in the primary table, there are
multiple matches in the lookup table
► ie. bibliographic records to items
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Data
Enter Relationships
slide title here
► Enter bullet text here
► Second
level
► Many
to many:
multiple records in the primary table match
● Third level
multiple records in the lookup table
► ie. patron records to patron blocks
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SQL
Enterjoin
slidetypes
title here
►
main
► Three
Enter bullet
textjoin
heretypes
► Second level
► Inner
● Third level
► Left outer
► Right outer
► Periodically useful
► Union
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SQL
EnterJoin
slide Types
title here
► Inner join
► Enter bullet text here
► Results
Second level
►
include all records where the linked field value in
● Third level
both tables is an exact match.
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SQL
EnterJoin
slide Types
title here
► Left Outer Join
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► Includes
Second levelall exact matches PLUS a row for every record in
►
● Third level
the primary (left) table whose linked field has no match in the
lookup (right) table.
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SQL
EnterJoin
slide Types
title here
► Right Outer Join
► Enter bullet text here
► Includes
Second levelall exact matches PLUS a row for every record in
►
● Third level
the Lookup (right) table whose linked field has no match in
the primary (left) table.
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Learning
totitle
pickhere
your tables
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►
Tables
► Choosing
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here
► Second level
► First
step
is to know what you want to Report on
● Third
level
► Use the database help on the extranet
► Depict the tables visually and draw your linking arrows
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Example
1 title here
Enter slide
►
► List
Enternew
bulletpatrons
text here entered over the last year. Include their Name,
► Second level
email●address,
Third level and if they have any stops on them.
► Tables: PatronRegistration, PatronStopDescriptions,,
PatronStops.
► Key: Patron ID, PatronStopID
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Example
1 title here
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► Enter bullet text here
► Second level
● Third level
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Example
2 title here
Enter slide
►
Bibtext
records
► List
Enterall
bullet
here entered since Jan1/99. Include title, author,
► Second level
their status
and the date each was entered into the system.
● Third level
► Tables: BibligraphicRecords, RecordStatuses
► Key: RecordStatusID
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Example
2 title here
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► Second level
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Example
3 title here
Enter slide
►
titles
in 1994. Group by title, materialtype.
► List
Enterall
bullet
textpublished
here
► Second level
► Tables:
BibliographicRecords,
CircItemRecords, MaterialTypes
● Third
level
► Key: BibliographicRecordID = AssociatedBibRecordid
MaterialTypeID
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Example
3 title here
Enter slide
► Enter bullet text here
► Second level
● Third level
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Example
4 title here
Enter slide
►
► Patrons
Enter bulletexpired
text herebefore Jan1/99. Include name, address, tel.#
► Second level
► Tables:
PatronRegistration,
PatronAddresses, Addresses,
● Third
level
PostalCodes, Countries, AddressTypes
► Key: PatronID, AddressID, PostalCodeID, CountryID,
AddressTypeID
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Example
4 title here
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► Enter bullet text here
► Second level
● Third level
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Example
5 title here
Enter slide
►
items
► List
Enterall
bullet
text with
here status of held. Include barcode, Author, Title.
► Second level
► Sort by
Author,
● Third
level title
► Tables: BibligraphicRecords, CircItemRecords, ItemStatuses
► Key: BibRecordID=AssociatedBibRecordID, ItemStatusID
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Example
5 title here
Enter slide
► Enter bullet text here
► Second level
● Third level
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Example
1 title here
Enter slide
►
patrons
entered over the last year. Include their Name, email
► List
Enternew
bullet
text here
► Second level
address,
and if they have any stops on them.
● Third level
Select PatronFullName, EntryDate, emailaddress, Description
From PatronRegistration PR with (nolock)
Left Outer Join PatronStops PS with (nolock) on (PR.PatronID =
PS.PatronID)
Inner Join PatronStopDescriptions PSD with (nolock)
on (PS.PatronStopID = PSD.PatronStopID)
Where EntryDate > getdate()-365
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Example
2 title here
Enter slide
►
Bibtext
records
► List
Enterall
bullet
here entered since Jan1/12. Include their Title,
► Second level
Author,
status
● Third
level and the date each was entered into the system.
Select BrowseTitle, BrowseAuthor, CreationDate,
RecordStatusName
From BibliographicRecords BR with (nolock)
inner join RecordStatuses RS with (nolock)
on (BR.RecordStatusID = RS.RecordStatusID)
Where CreationDate > ‘1/1/2012’
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Example
3 title here
Enter slide
►
titlestext
published
in 1994. Group by title, materialtype.
► List
Enterall
bullet
here
► Second level
Select Count(*),
BrowseTitle, MaterialType
● Third level
From BibliographicRecords BR with (nolock)
Inner join CircItemRecords CIR with (nolock) on
(BR.BibliographicRecordID = CIR.AssociatedBibRecordID)
Inner join MaterialTypes MT with (nolock) on
(CIR.MaterialTypeid = MT.MaterialTypeID)
Where PublicationYear = 1994
Group by BrowseTitle, MaterialType
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Example
4 title here
Enter slide
►
expired
before Jan1/99. Include name, address, tel.#
► Patrons
Enter bullet
text here
► PatronFullName,
Second level
Select
StreetOne, City, State, PostalCode, Country, PhoneVoice1
● Third level
From PatronRegistration PR with (nolock)
inner join PatronAddresses PA with (nolock) on (PR.PatronID =
PA.PatronID)
inner join Addresses A with (nolock) on (PA.AddressID = A.AddressID)
inner join PostalCodes PC with (nolock) on (A.PostalCodeID =
PC.PostalCodeID)
inner join Countries C with (nolock) on (PC.CountryID = C.CountryID)
Where ExpirationDate < ‘1/1/1999’
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Example
5 title here
Enter slide
►
items
► List
Enterall
bullet
textwith
herestatus of held. Include Barcode, Author, Title.
► Second level
► Sort
by Author, Title
● Third level
Select Barcode, BrowseAuthor, BrowseTitle
From BibliographicRecords br with (nolock)
Inner Join CircItemRecords cir with (nolock)
on (cir.AssociatedBibRecordID = br.BibliographicRecordID)
Inner Join ItemStatuses s with (nolock)
on (s.ItemStatusID = cir.ItemStatusID)
Where Description = ‘Held’
Order by BrowseAuthor, BrowseTitle
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Conclusion
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►
► Questions?
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► Second level
● Third level
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