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RootsWorks: Databasics—Using a Database for Genealogy A database, according to the American Heritage Dictionary, is "a collection of data arranged for ease and speed of search and retrieval." If you were to replace the word "data" with "mixed vegetables" and "search and retrieval" with "eating" you might get a better idea of what a database is. It's a collection of carrots, beans, and peas that you can sort, summarize, and print out. Databases are similar to warehouses in the sense that they are great places to store things that are similar. If you want to search for a match on a state, and some of the records say "TX" and some say "Tex" and some say "Texas" then you will have to do something to help the computer group them properly. Maybe you would add a field named "CODEDSTATE" and put "TX" in it for each of the three cases. That's called "scrubbing" the data—and it's really important in family history to do that in a way that doesn't involve destroying the original citation. I want to point out that there is a difference in a "database" and a "database management system (DBMS)." A database could be any old list, such as is often found in Microsoft Excel. A DBMS is a special program for storing and retrieving data, such as Microsoft Access. Today we will talk about when you, as a genealogy buff, might decide to use a database, and when that database might be in a DBMS (hint: probably never). Do You Really Need a Database? You might decide that you really want to use one. Let me say that using a database program requires more training than using a spreadsheet or word processor or genealogy program. You have to design your table structures, you have to figure out how to link data that is in different tables, and you have to figure out how to get the information into the tables. Most people come to their senses and quit before they get past this point. But there ARE times when you can make a case for using a DBMS. You have a better chance of being elected governor of California. For example, you will generally find that a spreadsheet can only handle 65,000 rows. So if you get your hands on a really big list of marriage records and want to play with it, you might need to use a DBMS. But the best uses for a DBMS are to link together lots of different kinds of vegetables, and that takes some special training that most of us don't have. And now that I've beaten that point to death, here's the good news. You can get lots of help with your data without learning it all. Hey Buddy, You Wanna Buy a Spreadsheet? Excel has a great set of lookup functions that will let you pull in data from different worksheets. I use HLOOKUP and VLOOKUP a lot, and I think you could use them to link and compare different kinds of information. For more information on HLOOKUP and VLOOKUP and how these functions work, check the help function of Excel. If you think this is a tough learning curve, I can assure you that a DBMS presents you with a lot more to learn than linking Excel tables. Excel also has a feature called "AutoFilter" that will let you click on any column and limit the display to some specific value in that column, such as a birth state of Alabama. Get a Clooz How About a Real Genealogy Program? If You Really Must, Think MS Access For links and more information about databases, please see the RootsWorks site. If you want to discuss your database challenges, please drop by the RootsWorks Forums. Registration is free, and I'd be interested to know what kinds of issues you are facing. Beau Sharbrough is a product manager at Ancestry.com. His articles contain his own views and opinions and do not reflect any corporate policy or statement by the company. The RootsWorks series of articles focuses on genealogical applications for generic technologies. Beau would like to hear from you at www.rootsworks.com and discuss this or any topic related to the use of technology in family history. Tell us about your experiences. Please note that he cannot assist you with your individual computer problems. Visit the RootsWorks website for links to previous articles and Beau's lecture schedule. Copyright 2004, MyFamily.com. All rights reserved.
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