Published: Sun, 25 Sep 2016 11:20:40 +0000
2016-09-25T11:20:40ZDatabase normalization can save storage space and ensure the consistency of your data. Learn the basics in this introductory article.
2016-09-25T11:20:40ZOne 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.
2016-09-25T11:20:40ZAs 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.
2016-09-25T11:20:40ZReferential integrity is a database concept that ensures that relationships between tables remain consistent. Find more information here.
2016-09-25T11:20:40ZFacts and dimensions form the core of any business intelligence effort. In this article, we look at the development and use of facts and dimensions.
2016-09-25T11:20:40ZSecond 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.
2016-09-25T11:20:40ZSQL 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.
2016-09-25T11:20:40ZWhat 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.
2016-09-25T11:20:40ZMicrosoft Access allows you to export data to a variety of formats for sharing and analysis. In this tutorial, we walk through the process of exporting an Access table to an Excel workbook.
2016-09-25T11:20:40ZThe Structured Query Language (SQL) is the language of databases. All modern relational databases, including Access, FileMaker Pro, Microsoft SQL Server and Oracle use SQL as their basic building block. In fact, it’s often the only way that you can truly interact with the database itself.
2016-09-25T11:20:40ZDatabase dependencies are a topic that often confuses both students and database professionals alike. Fortunately, they are not that complicated.
2016-09-25T11:20:40ZAre you new to the world of databases? Wondering where to get started? In this series of articles, we introduce you to the basics of database technology and help you get started in this exciting field.
2016-09-25T11:20:40ZBacking 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.
2016-09-25T11:20:40ZLooking 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.
2016-09-25T11:20:40ZThe Structured Query Language (SQL) is the set of instructions used to interact with a relational database. In fact, SQL is the only language that most databases actually understand. Whenever you interact with such a database, the software translates your commands (whether they are mouse clicks or form entries) into SQL statement that the database knows how to interpret.
2016-09-25T11:20:40ZRelationships allow you to describe the connections between different database tables in powerful ways. Once you’ve described the relationships between your tables, you can later leverage that information to perform powerful cross-table queries, known as joins.
2016-09-25T11:20:40ZLooking 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.
2016-09-25T11:20:40ZIn this article, we begin our look at the first of three major normal forms -- first normal form (otherwise known as 1NF).
2016-09-25T11:20:40ZAre 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.
2016-09-25T11:20:40ZMicrosoft Access 2013 allows you to easily create professionally formatted reports automatically from information stored in a database. In tis tutorial, we're going to design a nicely-formatted listing of employee home telephone numbers for the use of management using the Northwind sample database and Access 2013.
2016-09-25T11:20:40ZThe Structured Query Language (SQL)provides database users with the ability to create customized queries to extract information from databases. In an earlier article, we explored extracting information from a database using SQL SELECT queries. Let's expand upon that discussion and explore how you can perform advanced queries to retrieve data that matches specific conditions.
2016-09-25T11:20:40ZThe SQL Server Import and Export Wizard is a component of SQL Server Integration Services (SSIS) that facilitates the transfer of information between your SQL Server databases and other data sources, including Microsoft Excel, Microsoft Access and flat files.
2016-09-25T11:20:40ZJust 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!
2016-09-25T11:20:40ZThe release of Access 2007 brings a new file format. The MDB database files weve known for over a decade are now slated to become historical relics. While Access 2007 continues to support MDB databases for backwards compatibility purposes, Microsoft has now introduced the new ACCDB file format as the future standard. Wondering if you should begin using the ACCDB format?
2016-09-25T11:20:40ZThe bulk copy (bcp) command of Microsoft SQL Server provides you with the ability to insert large numbers of records directly from the command line.
2016-09-25T11:20:40ZLooking for an easy way to move your Microsoft Access database to the cloud? Microsoft's Office 365 service provides a central location.
2016-09-25T11:20:40ZGlossary of database related terms, including definitions, explanations, examples, suggested reading, and other resources.
2016-09-25T11:20:40ZWhat is a query? Find out here! Databases.
2016-09-25T11:20:40ZThe Northwind database contains some great sample tables, queries, reports and other database features. Here's how to install it.
2016-09-25T11:20:40ZDatabases are designed to offer an organized mechanism for storing, managing and retrieving information. They do so through the use of tables. If youre familiar with spreadsheets like Microsoft Excel, youre probably already accustomed to storing data in tabular form. Its not much of a stretch to make the leap from spreadsheets to databases.
2016-09-25T11:20:40ZIn this series of Microsoft Access tutorials, we follow the database admins for Patrick's Widgets as they build a Microsoft Access database.
2016-09-25T11:20:40ZDatabases depend upon keys to store, sort and compare records. If you’ve been around databases for a while, you’ve probably heard about many different types of keys – primary keys, candidate keys, and foreign keys. When you create a new database table, you’re asked to select one primary key that will uniquely identify records stored in that table.
2016-09-25T11:20:40ZIt's important to do a careful needs analysis before you dive in and commit to a database solution. Learn the difference between desktop and server databases.
2016-09-25T11:20:40ZLearn to retrieve information from your database with the SQL SELECT statement. Your About.com Guide to Databases provides a thorough introduction.
2016-09-25T11:20:40ZSQL Server 2014 provides a wide range of security features designed to help you protect the confidentiality, integrity and availability of data stored in your enterprise databases. One of the most important tasks that database administrators perform is the implementation of role-based access control that limits the ability of users to retrieve and modify data in the database unless they have an explicit business need to do so.
2016-09-25T11:20:40ZMost large-scale databases use the Structured Query Language (SQL) to define all user and administrator interactions. This language offers a flexible interface for databases of all shapes and sizes.
2016-09-25T11:20:40ZAre 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.
2016-09-25T11:20:40ZThe Data Control Language (DCL) is a subset of the Structured Query Lanaguge (SQL) that allows database administrators to configure security access to relational databases. It complements the Data Definition Language (DDL), which is used to add and delete database objects, and the Data Manipulation Language (DML), which is used to retrieve, insert and modify the contents of a database.
2016-09-25T11:20:40ZWant to learn how to use Microsoft Access? Find out about the fundamentals with this introduction.
2016-09-25T11:20:40ZThis 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.
2016-09-25T11:20:40ZWhat is a multivalued dependency? Find out here!
2016-09-25T11:20:40ZWould you like to learn SQL? This tutorial will introduce you to the basics.
2016-09-25T11:20:40ZAn attribute, when in regards to databases, deals with single data in an object. It is one of the basic terms used in SQL.
2016-09-25T11:20:40ZMicrosoft SQL Server 2008 offers administrators two choices of performing user authentication: Windows authentication mode and mixed authentication mode. Making the proper choice affects both the security and maintenance of your organization’s databases.
2016-09-25T11:20:40ZWhat is the domain of a database? Find out here!
2016-09-25T11:20:40ZDesktop databases offer simple, flexible solutions for data storage and retrieval. They're often quite sufficient to meet uncomplicated database requirements for both small and large organizations. If you're not sure if a desktop database is right for you, try reading the Choosing a Database series of articles which cover both desktop and server databases in depth
2016-09-25T11:20:40ZWhat is metadata? Find out here!
2016-09-25T11:20:40ZWith the release of Microsoft Office 365 in 2013, there were a number of questions about how it changed the different Microsoft programs, including Microsoft Access.
2016-09-25T11:20:40ZPassword 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.
2016-09-25T11:20:40ZMany database users begin their adventure in the world of databases by creating a Microsoft Access database that meets the basic requirements of their organizations. Often, this is a dramatic improvement from an unwieldy collection of spreadsheets, text files or other documents that the organization previously used to manage information. However, eventually the business may outgrow that Access database and need to make the move to a more advanced database product.
2016-09-25T11:20:40ZAll database management systems should share four characteristics: Atomicity, Consistency, Isolation and Durability.
2016-09-25T11:20:40ZTraces 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.
2016-09-25T11:20:40ZAre you familiar with the use of criteria in queries? They can help you limit results in interesting ways!
2016-09-25T11:20:40ZYou 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.
2016-09-25T11:20:40ZWhat is a foreign key? Find out here!
2016-09-25T11:20:40ZIn 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.
2016-09-25T11:20:40ZData mining allows you to find the needles hidden in your haystacks of data. Learn how to use these advanced techniques to meet your business objectives.
2016-09-25T11:20:40ZShould you use a spreadsheet or a database? Learn more in this article!
2016-09-25T11:20:40ZSo 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?
2016-09-25T11:20:40ZSQL joins allow you to retrieve data from multiple database tables. Your About.com Guide to Databases provides a comprehensive introduction.
2016-09-25T11:20:40ZThe SELECT command is the most commonly used command in SQL. It allows database users to retrieve the specific information they desire from an operational database.
2016-09-25T11:20:40ZLooking for a job in the database field? This article provides the advice you need to get started.
2016-09-25T11:20:40ZThe software that allows a computer to perform database functions of storing, retrieving, adding, deleting and modifying data.
2016-09-25T11:20:40ZDatabase normalization is one of the sacred cows of application development. Every undergraduate programming course you’ve taken or book you’ve read likely preaches about the importance of normalizing databases in an almost religious fashion. You’re made to feel like failure to normalize a database is tantamount to violating one of the laws of the universe. It’s time to challenge that truism. Sometimes it’s OK to denormalize your database
2016-09-25T11:20:40ZWhat is a full functional dependency? Find out here!
2016-09-25T11:20:40ZThe 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.
2016-09-25T11:20:40ZIs 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.
2016-09-25T11:20:40ZCopying, renaming and deleting tables in Microsoft Access often causes confusion for database administrators. In this article, we clarify the differences between the three operations and explain how to perform each.
2016-09-25T11:20:40ZIn this course, we explore the basics of database design. Ten weekly lessons each explore a different issue in database design, culminating in a final case study.
2016-09-25T11:20:40ZMicrosoft’s release of the SQL Server 2014 enterprise database management platform marks a major evolution in this popular product. Organizations seeking to license Microsoft's SQL Server database platform should have a clear understanding of the various editions available before making a purchase.
2016-09-25T11:20:40ZLooking for a definition of a database relationship? Check out the About Databases glossary definition!
2016-09-25T11:20:40ZLearn five ways that Microsoft Access databases can help your small business succeed!
2016-09-25T11:20:40ZEntity Relationship diagrams (also known as E-R or ER diagrams) provide database designers with a valuable tool for modeling the relationships between database entities in a clear, precise format. This industry standard approach uses a series of block shapes and lines to describe the structure of a database in a manner understandable to all database professionals. Many database software packages, including Microsoft Access, SQL Server, and Oracle, provide automated methods to quickly create E-R diagrams from existing databases.
2016-09-25T11:20:40ZWhat is a Candidate Key? Find out here!
2016-09-25T11:20:40ZWhat is a functional dependency? Find out here!
2016-09-25T11:20:40ZAn entity-relationship (ER) diagram is a specialized graphic that illustrates the relationships between entities in a database.
2016-09-25T11:20:40ZSQL Server provides three different recovery models that allow you to specify the way SQL Server manages log files and prepares your enterprise for a disaster. Each of these models represents a different approach to balancing the tradeoff between conserving disk space and providing for granular disaster recovery options.
2016-09-25T11:20:40ZAccess 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.
2016-09-25T11:20:40ZThis 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.
2016-09-25T11:20:40ZDid you know that you can view and edit the SQL statements that drive every Microsoft Access database query? In this article, we take a look at the process of accessing the underlying SQL code and tweaking it to perfect Access queries.
2016-09-25T11:20:40ZAs a marketing professional you already deal with so many apps and software packages you are probably wondering why you should have to deal with something that is designed specifically for databases. After all, you probably already have a number of Excel spreadsheets to handle calculations, contacts and email templates in your preferred email software, and marketing campaigns recorded in a third program. This is exactly why you can benefit from an app or program that offers the organization of a database; it provides a centralized program to keep all of your information current from a single location instead of needing all of the different apps and programs.
2016-09-25T11:20:40Zk-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.
2016-09-25T11:20:40ZIn an earlier article, we reviewed the process for creating an Access database from a template. While this is certainly an agreeable, easy approach to building a database, there isn’t always a template available that meets your needs. In this article, we review the process for creating an Access database from scratch.
2016-09-25T11:20:40ZCopying tables in Microsoft Access can be tricky, not because it is particularly difficult, but because there are a number of things you need to consider before you begin. Naturally, there are a lot of things you need to avoid as well, because having two copies of the same table will significantly skew your data.
2016-09-25T11:20:40ZLooking to prove your SQL Server Administration mettle? This quiz will help you prepare for Microsoft's 70-228 exam: Installing, Configuring, and Administering Microsoft SQL Server 2000 Enterprise Edition. This is a critical step toward earning your Microsoft Certified Database Administrator credential.
2016-09-25T11:20:40ZThis 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 even provides the latitude and longitude of that location.
2016-09-25T11:20:40ZPart VIII of our tutorial introduces you to the concept of Access forms to input and modify data.
2016-09-25T11:20:40ZThe MySQL database server is one of the most popular open source databases in the world. Although administrators typically install MySQL on a server operating system, it’s certainly possible to install it on a desktop operating system like Windows 7. Once you do so, you’ll have the tremendous power of the flexible MySQL relational database available to you for free. It’s an extremely useful database for both developers and system administrators. Installing MySQL on Windows 7 is an especially valuable tool for those seeking to learn database administration but lack access to a server of their own. Here’s a step-by-step walkthrough of the process.
2016-09-25T11:20:40ZYou've finally buckled down and decided that it's time to purchase a database solution for your home or business. What type of database do you need? It's actually a simple matter of deciding what features you need and choosing a product that meets your requirements and doesn't cause too much pain in your pocketbook.
2016-09-25T11:20:40ZWhat is a determinant? Find out here!
2016-09-25T11:20:40ZDo your databases contain fields where users have entered a mess of information in a variety of different formats? Microsoft Access input masks may help you alleiviate this inconsistency in your desktop databases. Input masks allow you to specify the format of allowable user input, preventing users from entering information in a form that does not meet your data quality requirements.
2016-09-25T11:20:40ZMicrosoft provides quite a few prebuilt database templates to assist you in jumpstarting your database development process. In this tutorial, we'll walk through the process of creating an Access database using these templates.
2016-09-25T11:20:40ZWhat is classification? Learn about this data mining term here.
2016-09-25T11:20:40ZPopular database certifications are always in demand, whether it's Microsoft's MCTS or MCITP, Oracle's OCA, OCP and OCM or MySql's CMA, CMDEV and CMDBA. Are you a database professional seeking to polish your resume in the hopes of landing a better gig? Database vendors offer a variety of professional certification programs that can help you advance your career while gaining valuable technical skills.
2016-09-25T11:20:40ZWhat is Boyce-Codd Normal Form (BCNF)? Find out here!
2016-09-25T11:20:40ZWhat is a relation? Find out here!
2016-09-25T11:20:40ZOne 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.
2016-09-25T11:20:40ZWhat is a transitive dependency? Find out here!
2016-09-25T11:20:40ZLooking for a definition of a database instance? Look no further!
2016-09-25T11:20:40ZMany 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.