Databases

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Basic Keys That Make Database Management Easy

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How to Choose a Primary Key for Your Database, and it's Not a ZIP Code

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Databases
The Latest in Databases
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How to Create Entity-Relationship Diagrams
Entity Relationship diagrams provide database designers with a valuable tool for modeling the relationships between database entities in a clear, precise format. Learn how to create basic diagrams for your databases with this guide.
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Getting Started in Microsoft Access Reports
Would you like to create professional-looking reports from your Microsoft Access database with the click of a mouse? Follow along as we walk through the simple process of designing a reusable report.
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How to Create Database Relationships in Access
Join us as we walk through the process of creating database relationships in Microsoft Access.
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How to Create a Simple Query in Microsoft Access
Learn how to create a simple query in Microsoft Access.
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How to Modify a Query in Microsoft Access
Want to learn how to modify a query in Microsoft Access? This is the help you need.
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How to Retrieve Data with SQL Queries: SELECT Statement
Learn to retrieve information from your database with the SQL SELECT statement.
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Retrieving Data from Multiple Tables with SQL Outer Joins
Join us as we walk through the process of retrieving data from multiple tables with SQL joins. This page shows how to use outer joins.
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How to Retrieve Data from Multiple Tables with SQL Joins
Learn to retrieve information from your database with the SQL SELECT statement.
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How to Retrieve Data from Multiple Tables with SQL Joins
SQL joins allow you to retrieve data from multiple database tables. Your About.com Guide to Databases provides a comprehensive introduction.
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Learn the Fundamentals of Microsoft Access
Want to learn how to use Microsoft Access? Find out about the fundamentals with this introduction.
Databases for Retail Shops
If you are a shop owner or manager, you already know exactly how important it is to have the right database. From inventory and shipping to employees and customers, you know that even a slow day involves a lot of data maintenance.
Microsoft Access Function Library: Rand()
The Rand() function returns a pseudorandom number between 0 and 1.
Microsoft Access Function Library: Log10()
The Log10() function returns the logarithm of the given number with base 10.
Microsoft Access Function Library: Log()
The Log() function returns the natural logarithm of the given number. It may also be used to return the logarithm of the given number using any specified base value.
Microsoft Access Function Library: Min()
The Min function evaluates the string found in expression, which may be the name of a table field, constant or function. It then returns the smallest value found there.
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