Published: Sun, 19 Feb 2017 11:20:02 +0000
2017-02-19T11:20:02ZDatabase normalization can save storage space and ensure the consistency of your data. Learn the basics in this introductory article.
2017-02-19T11:20:02ZAs you may already know, databases use tables to organize information. Each table consists of a number of rows, each of which corresponds to a single database record. So, how do databases keep all of these records straight? Its through the use of keys.
2017-02-19T11:20:02ZThink you're a database dummy? This article discusses basic database concepts, including the structure of a database and typical database programs.
2017-02-19T11:20:02ZReferential integrity is a database concept that maintains a consistent relationship between tables in the database and reduces errors.
2017-02-19T11:20:02ZOne of the most important concepts in databases is creating relationships between database tables. These relationships provide a mechanism for linking data stored in multiple tables and retrieving it in an efficient fashion. In order to create a link between two tables, you must specify a foreign key in one table that references a column in another table.
2017-02-19T11:20:02ZFacts and dimensions form the core of any business intelligence effort. In this article, we look at the development and use of facts and dimensions.
2017-02-19T11:20:02ZSQL Server constraints allow you to enforce rules in your database. These rules may affect business logic, database integrity and/or table structures. Each one plays an important role in your database architecture.
2017-02-19T11:20:02ZWhat is a primary key? What is it for and how is it used? This article provides a definition of the term as well as examples.
2017-02-19T11:20:02ZSecond Normal Form allows you to enhance the normalization of your database. In this article, we explore the requirements of 2NF and the process of normalizing your database.
2017-02-19T11:20:02ZThe Structured Query Language (SQL) is the language used to interact with modern relational databases.
2017-02-19T11:20:02ZDatabase dependencies are a topic that often confuses both students and database professionals alike. Fortunately, they are not that complicated.
2017-02-19T11:20:02ZLooking for advice on using the Structured Query Language? The About Databases SQL FAQ provides answers to the most frequently asked questions about SQL and databases.
2017-02-19T11:20:02ZThe Structured Query Language (SQL) is the set of instructions used to interact with a relational database.
2017-02-19T11:20:02ZBacking up your Microsoft Access databases is an important part of protecting your critical data. In this tutorial, we walk through the process of backing up an Access database, step-by-ste.
2017-02-19T11:20:02ZGlossary of database terms used commonly in many database management systems.
2017-02-19T11:20:02ZChoose your database's primary keys carefully, ensuring they are unique and will never need to be changed. A bad choice is a ZIP code or Social Security number.
2017-02-19T11:20:02ZAre you overwhelmed by the large quantities of data that need to be tracked in your organization? Perhaps you're currently using a paper filing system, text documents or a spreadsheet to keep track of your critical information. If you're searching for a more flexible data management system, a database might be just the salvation you're looking for and Microsoft Access 2013 provides an excellent option.
2017-02-19T11:20:02ZRelationships allow you to describe the connections between different database tables in a relational database in powerful ways.
2017-02-19T11:20:02ZIn this article, we begin our look at the first of three major normal forms -- first normal form (otherwise known as 1NF).
2017-02-19T11:20:02ZJust getting started with databases? Here's a rundown of the top things that I wish I knew before I got started in the field. These facts are guaranteed to make your life easier!
2017-02-19T11:20:02ZLearn to retrieve information from your database with the SQL SELECT statement.
2017-02-19T11:20:02ZUsing SQL SELECT queries, you can retrieve data in a range using the WHERE clause.
2017-02-19T11:20:02ZInstall the Northwind sample database for Microsoft Access 2013. This database contains some great sample tables, queries, reports and other database features useful for learning Access.
2017-02-19T11:20:02ZThe ACCDB Access file format has been the default Access file format since its 2007 release. Learn its benefits and how to convert between it and the older format, MDB.
2017-02-19T11:20:02ZDo a careful needs analysis before you dive in and commit to a database solution. Learn the difference between desktop and server databases.
2017-02-19T11:20:02ZLooking for a book to help you get started with Structured Query Language? Need a new reference book for your shelf? Check out my favorite SQL books.
2017-02-19T11:20:02ZThe Northwind database contains some great sample tables, queries, reports and other database features. Here's how to install it.
2017-02-19T11:20:02ZDatabase management systems ensure data integrity through the ACID protocol: Atomicity, Consistency, Isolation and Durability.
2017-02-19T11:20:02ZWith this metadata definition, find out how metadata describes data itself and is used in almost every industry.
2017-02-19T11:20:02ZAre you interested in tracing your family roots but don’t have a good place to store all of your genealogical information? While there are several full-featured family tree software packages on the market, you can also use a free Microsoft Access template to create your own genealogy database on your computer. Microsoft’s already done most of the work for you, so there is no programming knowledge needed to get started.
2017-02-19T11:20:02ZOne of the most common uses of a database is generating mass mailings. In this tutorial, we examine the process of creating mailing labels using Microsoft Access 2013 using the built-in Label Wizard.
2017-02-19T11:20:02ZIn this series of Microsoft Access tutorials, we follow the database admins for Patrick's Widgets as they build a Microsoft Access database.
2017-02-19T11:20:02ZWould you like to learn SQL? This tutorial will introduce you to the basics.
2017-02-19T11:20:02ZWant to learn how to use Microsoft Access? Find out about the fundamentals with this introduction.
2017-02-19T11:20:02ZThe Data Control Language (DCL) is a subset of the Structured Query Lanaguge (SQL) that allows database administrators to configure security access to relational databases.
2017-02-19T11:20:02ZAre you familiar with the use of criteria in queries? They can help you limit results in interesting ways!
2017-02-19T11:20:02ZA database attribute is a column, or field, in a database table. For example, given a Customers table, a Name column is an attribute of that table.
2017-02-19T11:20:02ZDesktop databases offer simple, flexible solutions for data storage and retrieval. Here's a rundown on the five top desktop databases for individuals and businesses.
2017-02-19T11:20:02ZPassword protecting an Access database allows you to protect your sensitive data from prying eyes. Encrypted databases require a password to open. Users attempting to open the database without the correct password will be denied access. Additionally, users attempting to directly access the database’s ACCDB file will not be able to view any of the data contained within it, as the encryption obscures the data from view by those without the proper password.
2017-02-19T11:20:02ZTraces allow you to track the specific actions performed against a SQL Server databases. They provide valuable information for troubleshooting database issues and tuning database engine performance. In this tutorial, we walk through the process of creating a SQL Server Trace with SQL Server Profiler, step-by-step.
2017-02-19T11:20:02ZThe BASE model offers a completely different alternative to our traditional notions of database engineering. It abandons the relational database guiding principles of atomicity, consistency, isolation and durability in favor of a relaxed approach that allows the flexible, efficient storage of data.
2017-02-19T11:20:02ZWhat is a full functional dependency? Find out here!
2017-02-19T11:20:02ZThe bulk copy (bcp) command of Microsoft SQL Server provides you with the ability to insert large numbers of records directly from the command line.
2017-02-19T11:20:02ZFind out how a database query can get the data you need out of your database by writing the query in the language the database requires, usually SQL.
2017-02-19T11:20:02ZIn our first article, we looked at the basic requirements of 3NF. Here they are again to refresh your memory: meet the requirements of 1NF and 2NF and remove columns that are not fully dependent upon the primary key.
2017-02-19T11:20:02ZDatabases offer an organized mechanism for storing, managing and retrieving information. Far more powerful than spreadsheets, a database and a Database Management System can help manage and protect large amounts of data.
2017-02-19T11:20:02ZDatabase software comes in all flavors. Here's a brief rundown on some of the primary desktop or server-based database software solutions.
2017-02-19T11:20:02ZFind out how defining a database domain ensures your data's integrity, which ensures that all data in a field contains valid values.
2017-02-19T11:20:02ZIs your Access database growing too large or unwieldy? Perhaps you need to allow more robust multiuser access to the database? Converting your Access database to Microsoft SQL Server might be the solution you’re trying to find. Fortunately, Microsoft provides an Upsizing Wizard in Access that makes it easy to convert your database. In this tutorial, we walk through the process of converting your database.
2017-02-19T11:20:02ZA multivalued dependency occurs when the presence of one or more rows in a table implies the presence of one or more other rows in that same table.
2017-02-19T11:20:02ZLearn five ways that Microsoft Access databases can help your small business succeed!
2017-02-19T11:20:02ZJoin us as we walk through the process of creating database relationships in Microsoft Access.
2017-02-19T11:20:02ZShould you use a spreadsheet or a database? Learn more in this article!
2017-02-19T11:20:02ZSQL Server authentication supports two modes: Windows authentication mode or mixed authentication mode. The mode you choose affects both the level of security and the ease of maintenance of your organization’s databases.
2017-02-19T11:20:02ZSo you've made the move from a spreadsheet to a database. You've set up your tables and painstakingly transferred all of your precious data. You take a well-deserved break, sit back and look at the tables you've created. Wait a second -- they look strangely familiar to the spreadsheets you've just disowned. Did you just reinvent the wheel? What's the difference between a spreadsheet and a database anyway?
2017-02-19T11:20:02ZLearn how to create a simple query in Microsoft Access.
2017-02-19T11:20:02ZHere, we define a database foriegn key and provide examples for understanding its relationship to a table's primary key.
2017-02-19T11:20:02ZUnderstand the definition of a database relationship, which is behind all relational databases.
2017-02-19T11:20:02ZA database management system allows a computer to perform database functions of storing, retrieving, adding, deleting and modifying data.
2017-02-19T11:20:02ZSQL Server provides three recovery models that allow you to specify the way SQL Server manages log files and prepares your enterprise for a disaster: Simple, Full and Bulk logged.
2017-02-19T11:20:02ZAccess offers users a way to print queries and their results. This provides users with a way to later review the results if they cannot remember which query was used.
2017-02-19T11:20:02ZAn entity-relationship diagram is a specialized graphic that illustrates the relationships between entities or concepts in a database.
2017-02-19T11:20:02ZLearn to retrieve information from your database with the SQL SELECT statement.
2017-02-19T11:20:02ZAlthough copying, renaming or deleting tables remains a straightforward process in Microsoft Access, you'd be wise to copy your database before you adjust its internal structure.
2017-02-19T11:20:02ZThis Microsoft Access sample database provides tables containing information on the world's countries, cities and provinces. It is used to illustrate examples for a number of the articles on the About Databases site and also provides a good sample for students, professionals and others who are learning Microsoft Access.
2017-02-19T11:20:02ZWhat is regression? Learn more about this data mining term here.
2017-02-19T11:20:02ZWhat is a Candidate Key? Find out here!
2017-02-19T11:20:02ZLooking for a job in the database field? This article provides the advice you need to get started.
2017-02-19T11:20:02ZInput masks in Microsoft Access 2013 restrict user input, preventing users from entering data in a form that doesn't meet your quality requirements.
2017-02-19T11:20:02ZWhile forms are most useful when accessed directly in the database, there will be times when you will want to print them, for example when you want details about a single record or if you want to create instructions and include screenshots for entering data into a form.
2017-02-19T11:20:02ZClassification is a data mining technique that helps analyze data and predict outcomes. It is one of several such methods used to analyze big data.
2017-02-19T11:20:02Zk-means clustering is a data mining/machine learning algorithm used to cluster observations into groups of related observations without any prior knowledge of those relationships. The k-means algorithm is one of the simplest clustering techniques and it is commonly used in medical imaging, biometrics and related fields.
2017-02-19T11:20:02ZWant to learn how to modify a query in Microsoft Access? This is the help you need.
2017-02-19T11:20:02ZA database instance is the entire database environment, but vendors may use the term in a specific way.
2017-02-19T11:20:02ZWhat is a determinant? Find out here!
2017-02-19T11:20:02ZPart 7 of our tutorial introduces you to the concept of Access forms to input and modify data.
2017-02-19T11:20:02ZWhat is a functional dependency in a database? Find out why FC is important in ensuring the accuracy of your data.
2017-02-19T11:20:02ZThis free Access database of ZIP codes provides database designers with a valuable tool to assist in mapping ZIP codes to a city/state pair and also provides the latitude and longitude of that location.
2017-02-19T11:20:02ZOver time, Microsoft Access databases grow in size and unnecessarily use disk space. Additionally, repeated modifications to the database file may result in data corruption. Therefore, it's a good idea to periodically run the compact and repair database tool to ensure the consistency of your data.
2017-02-19T11:20:02ZDatabase normalization is a basic tenet of database application development, but it's not always absolutely necessary. Here's a look at when you might not need to normalize.
2017-02-19T11:20:02ZLet us walk you through the process of converting your Excel spreadsheet to a flexible Access 2013 database.
2017-02-19T11:20:02ZMany organizations avoid the challenge of data classification because they consider it a burdensome, difficult effort. In fact, it’s likely that organizations without actively used data classification policies have tried implementing such a policy in the past and failed, never to try again. In this article, I offer you some practical advice for getting a data classification effort off the ground and applying it to your sensitive information.
2017-02-19T11:20:02ZA database relation is the same as a database table, and is governed by a series of constraints that ensure data integrity.
2017-02-19T11:20:02ZA transitive dependency in a database is an indirect relationship between values in the same table that causes a functional dependency and thus results in de-normalization.
2017-02-19T11:20:02ZEntity 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.
2017-02-19T11:20:02ZSample Excel Document. Databases.
2017-02-19T11:20:02ZWould 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.
2017-02-19T11:20:02ZEditing the raw SQL powering a Microsoft Office query is straightforward -- and Access conforms well to ANSI-standard SQL syntax.
2017-02-19T11:20:02ZYou can use SQL JOIN statements to combine data from three or more tables. Here you'll see how to accomplish this goal for an inner join.
2017-02-19T11:20:02ZThis free Access database of area codes provides database designers with a valuable tool to assist in mapping area codes to a state, province or region.
2017-02-19T11:20:02ZDatabase certifications from major database vendors including Microsoft, Oracle, MySQL and IBM.
2017-02-19T11:20:02ZWant to create dynamic, server-generated HTML from your Access database? This step-by-step tutorial will walk you through the process.