what field type in database

All data in the database is stored in the table. Data tables include rows and columns. The column determines the data type in the table. The row contains the actual data. For example, the table authors in the database pubs has nine fields. The

Java Queries database table structure (field name, type, length, etc.) through JDBCpublished by:The bean of the Mark's hometime:2012-11-20 17:54:02 Java Queries database table structure (field name, type, length, etc.) through JDBCAfter

This blog is a little bit long, it actually includes two content: one is the description of the MySQL field type, and the second is how to correctly select these field types in the MySQL build table process; field Type value MySQL's numeric

Should varchar or datetime be used for the field type of date stored in the database ?, Varchardatetime Background: Some time ago, I saw an article "how to show your (lover) name in the lower right corner of my computer" in Baidu experience. I have

There are a lot of related to char and varchar on the Internet, but all have a long history, here reprint a piece of information relatively new, personally think to my design field decision help very much. Modern databases generally support char

Bit integral typeThe bit data type is integral, and its value can only be 0, 1, or null. This data type is used to store data that has only two possible values, such as Yes or No, True or false, on, or off.Note: A data type that is space-saving and

Text nvarchar (n)Remark ntextNumber (long integer) intDigital (integer) smallintDigital (single-precision) realDigital (double-precision) floatNumber (bytes) tinyintCurrency moneyDate smalldatetimeBoolean bitAttached: a script converted to SQL.Alter

Type of a value Storage required for column typesTINYINT 1 bytesSMALLINT 2 bytesMediumint 3 bytesINT 4 bytesINTEGER 4 bytesBIGINT 8 bytesFLOAT (x) 4 if X FLOAT 4 bytesDOUBLE 8 bytesDOUBLE PRECISION 8 bytesReal 8 bytesDECIMAL (m,d) m bytes (d+2, if

Background: some time ago, I saw an article "how to show your (lover) name in the lower right corner of my computer" in Baidu experience. I have heard of this tip before, but I have not really set it, so I tried it out of curiosity. After setting,

SQL Server database field type descriptionThere are currently x field types in SQL Server database, broadly divided into 9 categories, namely string type, binary character string data type, Unincode string data, integer type, exact data type,