How would it be the best / most effective / less memory consuming way to store a 64 bits integ开发者_StackOverflower into a Jet Engine database? I'm pretty sure their integers are 32 bits.
The largest integer MSAccess supports is a NUMBER
(FieldSize= LONG INTEGER
) type
but this is not 64 bits.
http://msdn.microsoft.com/en-us/library/ms714540(v=vs.85).aspx
To store numbers as large as 64 bits you will need to use the DOUBLE
or DECIMAL
type, but will not have "integer precision" with DOUBLE
and you have overhead with DECIMAL
Alternatively you could use a CURRENCY
type and disregard decimals.
http://www.w3schools.com/sql/sql_datatypes.asp
For more details on the nuances of all data types you can look here: http://office.microsoft.com/en-us/access-help/introduction-to-data-types-and-field-properties-HA010233292.aspx
EDIT: Though you will have a limited number of significant digits in DOUBLE
as pointed out by @ho1 in the comments below.
You can make CURRENCY
work by inferring the digits in code if you are pressed for disk storage space but your best bet is probably DECIMAL
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