IBM Computer, Laptops and Servers

Laptop Battery Using Replications Horizontal and Vertical partitioning capabilities to manage pubications in a distributed database environment

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Thinkpad There are times that you may find yourself on a project where you have one data source and need to publish to many subscribing databases. Often times, Replication is not looked at as a viable solution to achieving this goal. We can only attribute this to the blood sweat and tears that it took to get Replication in SQL 6.5 to work smoothly. Fortunately those days are gone and Microsoft has only improved the way Replication works in SQL 2000. For this project, we will demonstrate the way we utilized the Horizontal and Vertical partitioning capabilities that Microsoft has added to the Replication utility.

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Microsoft To begin, we have company A, which sells its products based on district as the following scheme illustrates:

Pipe and Protective Jaws, > To be used for horizontal and vertical tensioning Fits all types of vices. Price per pair. 125mm No. > To be used for horizontal and vertical tensioning Fits all types of vices. Price per pair. 100mm No. > To be used for horizontal and vertical tensioning Fits all types of vices

Laptop Computers

In most cases, you will want the frame shape to match the shape of the subject and thus determine whether you want horizontal or vertical format. For instance, if shooting a skyline scene, the best choice is usually horizontal because the skyline is horizontal. On the other hand, if your subject is a skyscraper, the best choice will likely be vertical. Again, because skyscrapers are vertical.

Laptop Computer In this scenario a products given retail price may differ depending upon whether the product was purchased using the website or sold at one of our store locations. Additionally, a product can also have different discount prices in different districts, and be sold on either the web or in the store. Often times the discounts that are found on the website may or may not be applicable to in store sales, and the same rule applies to discounts found in the store.

The number of vertical lines that a system is capable of producing (counted on a horizontal axis). Host Usually referring to a computer server that can be accessed over a network HSB (Hue, Saturation, and Brightness) A color model that utilizes Hue, Saturation, and Brightness as the three coordinates. HSV (Hue, Saturation, and Value)

Desktop Computer All transactions will write to one database, which will act as the publisher to multiple subscribing databases. The database is called CentralInfo, and as earlier stated will act as the publishing database for our demonstration. There will be two databases that will subscribe to publications that are based off of the CentralInfo database. The WebSale database only needs the information about the products, web sale prices, and discounts that will be sold through the web by districts. The StoreSale database only needs the information about the products, store sale prices, and discounts that will be sold through the store by districts. To meet this business requirement we had to make some small modifications to the scheme. In order to restrict the rows and columns that will be defined in the publications, we added two columns (Use4WebSale and Use4StoreSale) to the Products and Products2District tables as row filters.

Notebooks

Lenovo (After adding Use4WebSale, and Use4StoreSale columns)

Hard Drive The filters are defined as integer data types and the default value for columns Use4WebSale and Use4StoreSale is 0. If a given product is for web sales then the value of column Use4WebSale will be updated to 1. If a given product is for store sales then the value of column Use4StoreSale will be updated to 1. For products that are meant for both web and store sales the value of both Use4WebSale and Use4StoreSale are set to 1. The following chart illustrates the possible scenarios.

Travelstar Product2Distirct: productid districtid websaleprice storesaleprice discountid discountstartdate discountenddate use4websale use4storesale 3 2 20 15 1 12/16/2002 7/31/2003 0 1 4 2 30 25 2 12/25/2002 1/15/2003 1 1 5 2 25 20 1 12/16/2002 7/31/2003 1 0

Gateway Products: productid productname productmodel warehouseid producttypeid use4websale productcost use4storesale 3 Oil filter RS-300 2 1 1 $7.99 1 4 Side mirror PA-100 2 2 0 $19.99 1 5 Door Bulb DB-022 1 3 1 $15.99 0 6 Window Bulb BW-012 1 3 0 $6.99 0 Publications and Subscribers

Laptop Parts There will be two publications and two subscribers to be set up.

Software 1a. Store publication configurations

Hard Drives Now that we have established what changes needed to be made to the scheme, we can now start defining our publications. We will define store publication and identify the articles that will be used in the publication. To create the publication the Create Publication wizard was used. And defined as follows:

Electronics Publication Name: CentralInfo_to_StoreSale

Canon Publishing Database: CentralInfo

Desktop Pc Articles: Products Products2Districts Districts States WareHouses Discounts ProductType

Desktop Computers Snapshot Options : The following options refer to the initial snapshot.

• Drop existing tables and recreate
• Uncheck Include declared referential integrity
• Uncheck Clustered indexes
• Uncheck Non-clustered indexes

Think Pad After initial snapshot has been applied, the filters can be added to the articles and re-initialization occurs on the publication. You must also change the snapshot property to Delete data in the existing tables that match the row filter statement. In the case where you have populated your CentralInfo database with data, you can apply all filters prior to the initial snapshot. This will eliminate the need to run the initialization snapshot a second time. Filters are defined as follows:

Repair For the Products article add this row filter (table) Row Filter: Use4StoreSale =1

Syntax: SELECT <published_columns> FROM <<TABLE>> WHERE <TABLE>>.Use4StoreSale = 1

Data Recovery For the Products2Districts article add this row filter(table) Row Filter and Column Filter: Use4StoreSale =1

Cisco Under the Column filter tab for the article Products2Districts, uncheck column WebSalePrice

Syntax: SELECT <published_columns> FROM <<TABLE>> WHERE <<TABLE>>.Use4StoreSale = 1

Keyboard 1b. Store subscriber configurations

Monitor The following describes the subscriber options that define how the StoreSale database will receive data from CentralInfo Database. The subscribing database can be created during the subscription process or pre-exist.

Subscription name: Server name: StoreSale Type: Push Publish Interval: Optional Scheme: Scheme is created by the Snapshot agent

Desktop Subscriber StoreSale:

Infosys

Refurbished Laptops 2a. Web publication configurations

Wipro Now, we will define the web publication and identify the articles that will be used. To create the publication the Create Publication wizard was used. And defined as follows:

Lap Top Publication Name: CentralInfo_to_WebSale

Refurbished Publishing Database: CentralInfo

Memory Articles: Products Products2Districts Districts States WareHouses Discounts ProductType

Intel Note: The articles in this publication are the same as defined in our StoreSale publication. Repeat all steps in this publication as you did for the StoreSale publication, the only exception will be to filter on the column; Use4WebSale.

As400 2b. Web subscriber configurations

Averatec The following describes the subscriber options that define how the WebSale database will receive data from CentralInfo Database. The subscribing database can be created during the subscription process or pre-exist.

Name: SQLSERVERNAME: WebSale Type: Push Publish Interval: Optional Scheme: Scheme is created by the Snapshot agent

Hardware Summary of implementation steps

Dual Xeon The following is a step-by-step summary of the tasks performed in order to implement this solution.

1. Run script to create the database scheme (CentralInfo). 2. Create Transactional Publication which includes the following sub tasks: 2.1 Create StoreSale database 2.2 Define articles with article options 2.3 No article filters 3. Run Snapshot 4. Run distribution 5. Modify Transactional publication which includes the following sub tasks: 5.1 Add filter to each article with the following Use4StoreSale =1 5.2 Update Snapshot option to Delete data in the existing tables that match the row filter statement 5.3 Re-initialize the publication 6. Create Transactional Publication which includes the following sub tasks: 6.1 Create WebSale database 6.2 Define articles with article options 6.3 No article filters 7. Run Snapshot 8. Run Distribution 9. Modify Transactional publication which includes the following sub tasks: 9.1 Add filter to each article with the following Use4WebSale =1 9.2 Update Snapshot option to Delete data in the existing tables that match the row filter statement 10. Re-initialize the publication 11. Run Snapshot (Once data has been mapped via the Customer Care department) 12. Run Distribution 13. Run scripts to load data into the CentralInfo database. 14. Once data has been published to the subscribers, check to insure that the filters are working as expected.

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