MDB Viewer exports dates in the format YYYY-MM-DD HH:MM:SS.Ī boolean value that can be either on or off, displayed as a check box in Microsoft Access. (Dates up to 2 million AD can be stored with a precision of 1 second.) Specifies a specific point in time (Date and time of day).ĭates are internally stored as an 8 byte double precision floating point numbers, so the range is virtually unlimited. Floats use 4 bytes, and doubles use 8 bytes of disk space. Use floating point numbers if you require a large range but only limited precision. The exponent (location of decimal point) is stored separately, an can range from -45 to +38 (float) or from -324 to 308 (double). They have a precision of up about 7 decimal digits (float) or 15 digits (double). It was introduced for financial data and is available in all versions of Access.įloating point numbers are similar to numbers written in scientific notation, and come in two varieties: float and double. The currency type is a special kind of decimal, with up to 4 digits on the right of the decimal point and up to 15 on the left. Type for integers larger than the range supported by the Long Integer type.ĭecimals are only supported by Microsoft Access 2000 and later.Ī decimal number uses 17 bytes of disk space. Despite the name "Decimal" you can also use the decimal data The maximum total number of digits supported by Access is 28.ĭecimals are used for exact numeric values. Decimals have a fixed number of digits to left and They can have a fractional part,Īnd they can be either positive or negative. The single byte number is named Byte (Range 0-255), the two-byte number is named Integer (-32768 to 32767)Īnd then there is the Long Integer (-2 billion to 2 billion).ĭecimal numbers are so called fixed point numbers. Integers in Access come in 1, 2 and 4 byte varieties. Numeric Types Byte, Integer and Long Integer MDB Viewer automatically supports all encodings used in Access. Therefore Microsoft switched to the Unicode character encoding in Access 2000. This worked great in most cases,īut caused problems when columns contained text in different alphabets. Microsoft Access supports text in a variety of languages and alphabets.Īccess 97 supported multiple code pages in the same document. The Text data type is used for short text fields of limited length, and can contain up to 255 characters.Ī Memo field is a virtually unlimited text field. This document will describe each data type and note which versions of Microsoft Access support it. Fields in a Microsoft Access database can be of many different data types.Īccess supports different kinds of text, numbers, dates and some more special data types.
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