The Access Memo data type stores alphanumeric data up to 65,535 characters.Ĭhoose Memo to avoid truncating any data.Īccess has one Number data type that varies based on a Field Size property (Byte, Integer, Long Integer, Single, Double, Decimal).Ĭhoose Double to avoid any data conversion errors.Īccess and Excel both use the same serial date number to store dates.
The Access Text data type stores alphanumeric data up to 255 characters. The following table summarizes how Excel number formats and Access data types are converted when you import data from Excel to Access, and offers some tips on the best data types to choose in the Import Spreadsheet Wizard. For more information, search for "data cleansing software" or "data quality" by your favorite search engine in your Web browser.Ĭhoose the best data type when you importĭuring the import operation in Access, you want to make good choices so that you receive few (if any) conversion errors that will require manual intervention. Note: If your data cleaning needs are complex, or you don't have the time or resources to automate the process on your own, you might consider using a third-party vendor. Remove duplicate rows or duplicate fields.Įnsure that columns of data do not contain mixed formats, especially numbers formatted as text or dates formatted as numbers.įor more information, see the following Excel help topics:įilter for unique values or remove duplicate valuesĬonvert numbers stored as text to numbers Use the TRIM command to remove leading, trailing, and multiple embedded spaces.įind and fix spelling and punctuation errors. For example, a cell in a "Skills" column that contains multiple skill values, such as "C# programming," "VBA programming," and "Web design" should be broken out to separate columns that each contain only one skill value. If you clean out and organize your possessions before you move, settling into your new home is much easier.īefore you import data into Access, in Excel it's a good idea to:Ĭonvert cells that contain non-atomic data (that is, multiple values in one cell) to multiple columns. Importing data is like moving to a new home. Importing data is an operation that can go a lot more smoothly if you take some time to prepare and clean your data. Note: For information on data modeling and relationships in Access, see Database design basics.
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