New Database Design

Hi,
I'm an DBA and i was assigned to design a new database(fresh) in oracle 11gR2 in windows platform for a project. Since, i'm new to database design, getting confusion on what perspective to approach and where to begin.
Can anyone please help on this.
Note: URL's are welcome.

1011442 wrote:
Hi,
Thanks for providing the link.
The link that you sounds good and providing much info on considerations in creating a database and schema security.
But, i want the logical design part.
Assume that the database design for College Management System. It might have enrollment module, result module, staff module, etc., including more schema objects. I'm expecting the procedures or steps involving in such designs & how to design.
It starts with interviewing the end-user and determining their requirements .. especially flushing out all the entities (student, staff member, department, course, class, etc, etc, etc) and their attributes, then determining the relationship between said entities and attributes. Those entities, attributes, and relationships will be your logical database design.

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Morgan Kaufmann publishers have just released a new book on physical database design covering how to design indexes, range and hash partitioning, materialized views, storage layout, RAID, warehouse design and other physical design areas. The book covers Oracle and several other major databases. Lots of diagrams and examples. It's actually a really good book. An excellent book for people who design and administer databases.
Available on Amazon and most other book sellers.
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ISBN-13: 978-0-12-369389-1
ISBN-10: 0-12-369389-6
Series: The Morgan Kaufmann Series in Data Management Systems
Link on Amazon:
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how could we get the report of previous five years sale of the products.
SELECT trunc(sale_date, 'YYYY'), sum(sale_qty)
FROM sales
WHERE sale_date >= add_months(sysdate-60)
GROUP BY trunc(sale_date, 'YYYY')
suggest whether dropped Product name from the sale table as I already have a column prodid in it?Yes. Duplicated data is a Bad Thing. This is Rule #1 of the late Dr. Codd's 12 rules. These are the foundationstones of good relation design. Wikipedia has a good introduction to them.
Cheers, APC

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Jens I found a few good links in there...I was trying to
find if there was a certification track offered in
DB Design? I see a lot of instructor led classes most
of them only 2-3 days long.

Suggestion: Create a Database Design Forum

I recommend the creation of a new forum dealing exclusively with database design questions, such as setting Primary Keys, Unique constraints, Check constraints, Indexes, schema-creation scripts, etc. There is no forum devoted exclusively to this topic now and I feel it would be very helpful to the user community. It would certainly make searching for answers to design questions much easier.

Billy Verreynne wrote:
Prohan wrote:
I don't agree there.
1. How to create a relational model certainly IS relevant to Oracle, which is a RELATIONAL DBMS.Oracle also supports data warehousing (star schema designs), network/hierarchical designs, object-relational designs - or pretty much any data model that you may come up with. Calling it just a relational DBMS is incorrect.
2. Your point that logical models are independent of specific technology is correct. What you're missing is that if a specific technology makes use of a certain foundational body of knowledge, that knowledge is a legitimate topic for a forum whose users use that specific technology.That is putting the cart in front of the horse IMO.
I would rather see data modeling and logical database design being done in a way that is untainted with specific vendor implementations and technology used. There needs to be a clear line dividing the design from the implementation. If not, then design decisions can (and will) be made based not on the correct logical data modeling principles, but whether it can be "handled" by the technology. A design that is tainted like that, will always be less than optimal (especially as technology is continually evolving and changing).
An OTN forum for database design will invariable be tainted with Oracle technology - and instead of learning sound data modeling fundamentals, a warped view of data modeling will be conveyed. Where doing abc will be acceptable (when it is not), because Oracle has feature xyz that can make the flawed design work (in a fashion).Excellent points. I think (or at least hope) such a forum would attract some number of pure theorists to straighten out the view. This might make for a lively forum, and might actually influence the real products, and might even get the cart on the right side of the horse.
Hmmm, I guess I do sound hopelessly optimistic.

Changing a source module to a new database?

Hi there, looking for help from the users here! I'm on OWB 10.2 This should be a simple one, but I'm having a hard time!
The short summary of my question, is how do I change my mappings in my target db to pull from a new source module / database?
Here's the longer description:
In design center I have 2 different locations ("loc x prod_old" and "loc y prod_new"). I currently have a source module callled "m_src" that currently uses "loc x prod_old". So all views, etc, in "m_src" are currently being pulled from "loc x prod_old".
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I can also now select a mapping in my "m_tgt" module and when I generate the code I can see that it will use "loc y prod_new" instead of "loc x prod_old", which is correct.
When I go to control center, and run the mapping, the mapping is still using the "loc x prod_old", which is not what I want. It seems that I have to re-deploy each mapping. When I go to the db and look at the mapping using toad I can see the mapping still points to the "loc x prod_old". Only when I re-deploy the mapping does it use "loc x prod_new."
Surely there must be a way that I can change my location or my source module and get my mappings to use the new location, without having to re-deploy each and every mapping. How can I best do this?
Thanks!

I guess I should have waited another day before posting (unfortunately time is critical now). I figured this out and am closing the thread.
design center > location > edit it, pointing to new db
design center > go verify the data on a view
control center > target module > connector > drop / replace
in a sql tool you can now verify your dblink points to the new db

How to create a new DataBase using Oracle 10g Express Edition???

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A SQL Server database is roughly equivalent to an Oracle schema.
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Re: Database design software ?

The 'original' database development program is still being
developed with a
pedigree of over 40years
www.dbase.com
Regards
Cliff
Cliff Rielly

"Chris Seymour" <[email protected]> wrote in message
news:f1f96g$mq3$[email protected]..
> Was curious to see what database design software people
were using?
> I have been looking around and have some ideas but I
like to check what
> others are using.
If you are looking for a generic db design tool, and not for
a database GUI,
Case Studio is worth a try:
www.casestudio.com/
Massimo Foti, web-programmer for hire
Tools for ColdFusion and Dreamweaver developers:
http://www.massimocorner.com

Re: (forte-users) Round-trip database design

We have used Erwin quite sucessfully, but it's not cheap.
"Rottier, Pascal" <Rottier.Pascalpmintl.ch> on 02/15/2001 04:51:01 AM
To: 'Forte Users' <forte-userslists.xpedior.com>
cc:
Subject: (forte-users) Round-trip database design
Hi,
Maybe not 100% the right mailing list but it's worth a try.
Does anyone use tools to automatically update the structure of an existing
database?
For example, you have a full database model (Power Designer) and you've
created a script to create all these tables in a new and empty database.
You've been using this database and filling tables with data for a while.
Now you want to do some marginal modifications on these tables. Add a
column, remove a column, rename a column, etc.
Is there a way to automatically change the database without losing data and
without having to do it manually (except the manual changes in the (Power
Designer) model).
Thanks
Pascal Rottier
Atos Origin Nederland (BAS/West End User Computing)
Tel. +31 (0)10-2661223
Fax. +31 (0)10-2661199
E-mail: Pascal.Rottiernl.origin-it.com
++++++++++++++++++++++++++++
Philip Morris (Afd. MIS)
Tel. +31 (0)164-295149
Fax. +31 (0)164-294444
E-mail: Rottier.Pascalpmintl.ch
For the archives, go to: http://lists.xpedior.com/forte-users and use
the login: forte and the password: archive. To unsubscribe, send in a new
email the word: 'Unsubscribe' to: forte-users-requestlists.xpedior.com

Hello Pascal,
Forte has classes which might be able to scan the database structure
(DBColumnDesc,etc.). Express use this classes to determine how the
BusinessClass looks like. We use Forte to create the tables,indexes and
constraints. We have the Problem that the above described classes are only
readable but not fillable. The solution for us will be to create our own
classes in
the same manner than existing classes are. So we are able to make updates in
the database structure and maybe able to change the database tables with tool
code. Another reason for us to have the database structure in the
application is the
ability to see the table structure on which the Forte code works always up
to date
with the code. You are always able to compare the structure of the database
with
your businessclasses and able to convert a wrong structure to the correct
structure
with maybe just a little piece of code.
Hope this helps
Joseph Mirwald

Good database design and modelling books

Hi ,
I need to work on designing a database from the scratch by creating logical database design and then physical database design.I'm new to database design.
Can someone please point me to some good database design and modelling related books /tutorials.
Regards,
Bharath.

bharathDBA wrote:
Hi Girish Thanks for the information.
I would definitely look into this book later.
I don't mind paying any amount of money,if that book gives me the knowledge I want.
As this book is international edition,for shipping it is taking 8-10 business days and by that time I need to complete designing my database and probably I might need to some other book.
Is this a school assignment? I hope so. Referring back to your opening statement "I need to work on designing a database from the scratch by creating logical database design and then physical database design.I'm new to database design." I can only say that database design is a very big subject. If you are starting from a position of no knowledge at all, I'm afraid there is nothing that is going to give you the knowledge you need in the time frame you have. I will say you need to start by learning the rules of Data Normalization. Make your logical design Third Normal Form. Good can be your friend. There is actually a pretty good write-up on Data Normalization on Wikipedia.

Database design for swapping/trading items between companies

What is the best SQL table schema for items being swapped/traded between companies? For instance:
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e.g.2 If company A wants to swap item 0004 (owned by customer X but being managed by company A) with company B who is offering item 0005 (owned by customer Y but being managed by company B)
These are the tables I have so have so far, it should be good enough to support 1 to 1 trades but not too sure about 1..* to 1..* (many to many) trades, is it correct or can it be improved further?
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Trade
id: int (primary key)
company1_id: int (foreign key)
company2_id: int (foreign key)
datetime: string
status: string
TradeDetail
id: int (primary key)
trade_id: int (foreign key)
item_id: int (foreign key)
Company
id: int (primary key)
name: string
address: string
phone: string
email: string
rating: int
Customer
id: int (primary key)
f_name: string
s_name: string
dob: string
address: string
phone: string
email: string
Item
id: int (primary key)
customer_id: int (foreign key)
company_id: int (foreign key)
price: double

I made a few changes.
You need to think about NATURAL KEY for each table. For example, what is the NATURAL KEY for the Customer table. It can be:
CompanyTaxID char(9) NOT NULL UNIQUE
or
SSNO char(9) NOT NULL UNIQUE
Trade
id: int (primary key)
company1_id: int (foreign key)
company2_id: int (foreign key)
datetime: datetime
unique(company1_id, company2_id, datetime)
status: string
TradeDetail
id: int (primary key)
trade_id: int (foreign key)
item_id: int (foreign key)
Company
id: int (primary key)
name: string
address: string
phone: string
email: string
rating: int
Customer
id: int (primary key)
f_name: string
s_name: string
dob: string
address: string
phone: string
email: string
Item
id: int (primary key)
customer_id: int (foreign key)
company_id: int (foreign key)
price: decimal(20,2)
Kalman Toth Database & OLAP Architect
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Database design for share market

Hi One and All,
I have a query regarding, design of New database....
Right now I joined as a Database administrator as a fresher, my superior has given me one assignment i.e. I have to create a sample database on Share market. As per his requirement the tables should be Issuer table, Security table, Broker table, INvestor table, Account table, Order table, Tradeing table. He said that I have to prepare the fiellds for this tables and relation ships and whole database structure.... I can prepare relations ships and database structure but the problem is, I don't know how the stock market is really works. If any body help me in this issue I am very thank full to him.
I need just the table feilds, if I get this rest of job i wil do by studying the subject of share market.
Thank You

Hi,
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Regards,
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Database Design in JDeveloper

Hi,
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I was wondering how trigger-code, functions, procedures can be imported (or created) in JDeveloper. Also, can I add storage information like tablespaces to objects?
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DataBase Design

Hello Friends!
I am new in database design. I design a database for a company which sale their products. The company has their outlets in four regions i.e. (North, South, East and WEST) and they want to check their sale of the Product.. The sample reportâs format and data are shown below:
1.     Product-Wise Monthly Sale
Sale for the Month of July-2004
     Books     NoteBooks     Pen     Pencils
Schools     25     10     50     25
Colleges     15     5     10     3
Universities     6     30     14     3
Government     2     27     6     1
Others     21     32     54     8
TOTAL:     69     104     134     40
2.     Sector-Wise Annual Sale
Sale for the Year 2004-05
     Books     NoteBooks     Pen     Pencils
Schools     25     10     50     25
Colleges     15     5     10     3
Universities     6     30     14     3
Government     2     27     6     1
Others     21     32     54     8
TOTAL:     69     104     134     40
3.     Sale of Product for the current and previous years
Sale by Product
     2001-02     2002-03     2003-04     2004-05
Books     10     5     15     25
NoteBooks     10     5     15     25
Pens     10     5     15     25
Pencils     10     5     15     25
TOTAL:     40     20     60     100
3.     Sale by Sector for the current and previous years
Sale by Sector
     2001-02     2002-03     2003-04     2004-05
Schools     10     5     15     25
Colleges     10     5     15     25
Universities     10     5     15     25
Government     10     5     15     25
Others     40     20     60     100
TOTAL:     80     40     120     200
4.     Region-Wise Sale for the current and previous years.
Sale by Region
     2001-02     2002-03     2003-04     2004-05
East     10     5     15     25
West     10     5     15     25
North     10     5     15     25
South     10     5     15     25
TOTAL:     40     20     60     100
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Year (Table)
YearID int
Description Varchar2
Period_From Date
Period_To Date
Current logical
Month (Table)
MonthID int (1,2,3,4,5,6,7,8,9,10,11,12)
MonthDescription varchar2 (Jan,Feb, Mar, Apr, May, Aug, Sept, Aug, Oct, Nov, Dec)
StartDate Date
EndDate Date
Region(Table)
RegionID int (1,2,3,4)
RegionName varchar2 (East, West, North, South)
Sector (Table)
SectorID int (1,2,3,4,5)
Sector Varchar2 (School, Colleges, University, Government, Others)
Product (Table)
ProductID int (1,2,3,4)
ProdName varchar2 (Books, NoteBooks, Pen, Pencil)
Sale (Table)
SaleID int
ProductID int
Product varchar2
Sale int
RegionId int
SectorID int
MonthID int
YearID int
Thanks.
(BASIT)

how could we get the report of previous five years sale of the products.
SELECT trunc(sale_date, 'YYYY'), sum(sale_qty)
FROM   sales
WHERE sale_date >= add_months(sysdate-60)
GROUP BY trunc(sale_date, 'YYYY')
suggest whether dropped Product name from the sale table as I already have a column prodid in it?Yes. Duplicated data is a Bad Thing. This is Rule #1 of the late Dr. Codd's 12 rules. These are the foundationstones of good relation design. Wikipedia has a good introduction to them.
Cheers, APC

New Database Design

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