Northwind Sample Database Access 2007

About designing a database Access. Good database design ensures that your database is easy to maintain. You store data in tables and each table contains data about only one subject, such as customers. Therefore, you update a particular piece of data, such as an address, in just one place and that change automatically appears throughout the database. A well designed database usually contains different types of queries that show the information you need. Demonstrates how to use web services in SharePoint workflows using Visual Studio 2012. Provided by Andrew Connell, AndrewConnell. Note This article is. The following document is a sample of a finished business plan. Northwind Traders Sample Business Plan 1. Introduction to ODATA. OData services are web services that expose some resources. You can access these resources via URL. OData protocol specifies how you can access. Connectify Hotspot Pro For Windows 8.1 64 Bit there. A query might show a subset of data, such as all customers in London, or combinations of data from different tables, such as order information combined with customer information. This query retrieves the order ID, company name, city, and required date information for customers in London whose orders were required in April. The results you want from your database the forms and data access pages you want to use, and the reports you want to print dont necessarily provide clues about how you should structure the tables in your database, because you often base forms, reports, and data access pages on queries instead of tables. Before you use Microsoft Access to actually build tables, queries, forms, and other objects, its a good idea to sketch out and rework your design on paper first. You can also examine well designed databases similar to the one you are designing, or you can open the Northwind sample database and then open the Relationships window to examine its design. Follow these basic steps when designing your database. Determine the purpose of your database. The first step in designing a database is to determine its purpose and how its to be used Talk to people who will use the database. Brainstorm about the questions you and they would like the database to answer. Sketch out the reports youd like the database to produce. Gather the forms you currently use to record your data. As you determine the purpose of your database, a list of information you want from the database will begin to emerge. From that, you can determine what facts you need to store in the database and what subject each fact belongs to. These facts correspond to the fields columns in your database, and the subjects that those facts belong to correspond to the tables. Determine the fields you need in the database. Each field is a fact about a particular subject. For example, you might need to store the following facts about your customers company name, address, city, state, and phone number. You need to create a separate field for each of these facts. When determining which fields you need, keep these design principles in mind Include all of the information you will need. Store information in the smallest logical parts. This topic shows you how to connect to a Microsoft Access data source from the Choose a Data Source or Choose a Destination page of the SQL Server Import and Export. For example, employee names are often split into two fields, First. Name and Last. Name, so that its easy to sort data by Last. Name. Dont create fields for data that consists of lists of multiple items. For example, in a Suppliers table, if you create a Products field that contains a comma separated list of each product you receive from the supplier, it will be more difficult to find only the suppliers that provide a particular product. Dont include derived or calculated data data that is the result of an expression. For example, if you have a Unit. Price field and a Quantity field, dont create an additional field that multiplies the values in these two fields. Access%20Tutorial/northwind3.jpg' alt='Northwind Sample Database Access 2007' title='Northwind Sample Database Access 2007' />Dont create fields that are similar to each other. For example, in a Suppliers table, if you create the fields Product. Product. 2, and Product. Also, you will have to change the design of your database if a supplier provides more than three products. You need only one field for products if you put that field in the Products table instead of in the Suppliers table. Determine the tables you need in the database. Each table should contain information about one subject. Your list of fields will provide clues to the tables you need. For example, if you have a Hire. Date field, its subject is an employee, so it belongs in the Employees table. You might have a table for Customers, a table for Products, and a table for Orders. Crosstab query techniques. Wow. This article explains a series of tips for crosstab queries. An example. A crosstab query is a matrix, where the column headings come from. EE Experts, This seems like a stupid question but I have to ask it any way. How do I get my application in MSAccess 2007 to run in debug mode When I am. Microsoft uses a variety of fictional companies in the documentation and training material for its products. Microsoft documentation and learning materials often. Learn how to install the Northwind sample database for Microsoft Access 2013. This database contains sample tables, reports, and other features. Northwind Sample Database Access 2007' title='Northwind Sample Database Access 2007' />Determine which table each field belongs to. When you decide which table each field belongs to, keep these design principles in mind Add the field to only one table. Dont add the field to a table if it will result in the same information appearing in multiple records in that table. If you determine that a field in a table will contain a lot of duplicate information, that field is probably in the wrong table. For example, if you put the field containing the address of a customer in the Orders table, that information will probably be repeated in more than one record, because the customer will probably place more than one order. Northwind Sample Database Access 2007' title='Northwind Sample Database Access 2007' />However, if you put the address field in the Customers table, it will appear only once. In this respect, a table in a Microsoft Access database differs from a table in a flat file database such as a spreadsheet. When each piece of information is stored only once, you update it in one place. This is more efficient, and it also eliminates the possibility of duplicate entries that contain different information. Identify the field or fields with unique values in each record. In order for Microsoft Access to connect information stored in separate tables for example, to connect a customer with all the customers orders each table in your database must include a field or set of fields that uniquely identifies each individual record in the table. Such a field or set of fields is called a primary key. Determine the relationships between tables. Now that youve divided your information into tables and identified primary key fields, you need a way to tell Microsoft Access how to bring related information back together again in meaningful ways. To do this, you define relationships between tables. You may find it useful to view the relationships in an existing well designed database such as the Northwind sample database. Refine your design. After you have designed the tables, fields, and relationships you need, its time to study the design and detect any flaws that might remain. It is easier to change your database design now than it will be after you have filled the tables with data. Use Microsoft Access to create your tables, specify relationships between the tables, and enter enough sample data in your tables so you can test your design. To test the relationships in your database, see if you can create queries to get the answers you want. Create rough drafts of your forms and reports and see if they show the data you expect. Look for unnecessary duplications of data and eliminate them. Enter data and create other database objects. When you are satisfied that the table structures meet the design principles described here, then its time to go ahead and add all your existing data to the tables. You can then create other database objects queries, forms, reports, data access pages, macros, and modules. Use Microsoft Access analysis tools. Microsoft Access includes two tools that can help you refine the design of a Microsoft Access database. The Table Analyzer can analyze the design of one table at a time, can propose new table structures and relationships if appropriate, and can divide a table into new related tables if that makes sense. The Performance Analyzer can analyze your entire database and make recommendations and suggestions for improving it. The wizard can also implement these recommendations and suggestions.