On the Database menu click User Defined Types. In the User-Defined Types dialog box, click Add. In the Add New User-Defined Type dialog box, enter a name. To base your new data type on an existing data type, select the Copy From check box, and then select the nam...
Two kinds of user-defined data types can also be created: Alias data types are created from base data types. They provide a mechanism for applying a name to a data type that is more descriptive of the types of values to be held in the object. This can make it easier for a programmer...
Description of the instance parameter in Enum type Used by actions: DescribeInstanceParams. NameTypeDescription ParamName String Parameter name ValueType String Parameter type, such as Enum. NeedRestart String Whether to restart the database after modifying the parameters. Valid values: - true (requir...
a user-defined type defined in one database cannot be used in a column definition of another database. However, if the same user-defined type is registered and can be accessed in two databases, you can convert a user-defined type value from one database for use in another database. This...
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Database, any collection of data, or information, that is specially organized for rapid search and retrieval by a computer. Databases are structured to facilitate the storage, retrieval, modification, and deletion of data in conjunction with various data
Represents a collection of UserDefinedTableType objects. Each UserDefinedTableType object represents a user-defined table type on the database.命名空间: Microsoft.SqlServer.Management.Smo 程序集: Microsoft.SqlServer.Smo(在 Microsoft.SqlServer.Smo.dll 中)...
Table 2 Data types supported for the open-source MySQL database Category Type Description Storage Format Example Hive DWS Character string CHAR(M) A fixed-length string of 1 to 255 characters, for example, CHAR(5). The length limit is not mandatory. It is set to 1 by default. 'a' or...
A quick survey of database components Databases come in many forms, including relational database management systems (RDBMS) like MySQL and PostgreSQL, as well as NoSQL databases such as MongoDB and Cassandra. While the components outlined below are common to most database systems, specific implem...
Decimal numbers are stored in the database exactly as specified.By default, a decimal column has a minimum value of -100,000,000,000 and a maximum value of 100,000,000,000. The minimum and maximum values can be configured.FloatA floating point number with up to five decimal places. You...