In this case, no transliteration is performed between the source and destination character sets, and errors may occur during assignment.įor a complete description of the DEFAULT CHARACTER SET clause and a list of the character sets supported by InterBase, see the Data Definition Guide. You can load any character set into a column defined with NONE, but you cannot later move that data into another column that has been defined with a different character set. admin:database-metadata-field( name as xs:string ) as element(configuration). Using character set NONE means that there is no character set assumption for columns data is stored and retrieved just as you originally entered it. This includes the structure of each table, data element definitions. If you do not specify a character set, the character set defaults to NONE. Metadata are the definitions of the database structures for NASIS and its related databases. LATESTthe version of the metadata corresponds to the database. Legal values for this parameter are as follows: COMPATIBLE (default)the version of the metadata corresponds to the database compatibility level. For example, the following statement creates a database that uses the ISO8859_1 character set:ĬREATE DATABASE 'europe.ib' DEFAULT CHARACTER SET ISO8859_1 Database objects or attributes that are incompatible with the version will not be extracted. To specify a default character set, use the DEFAULT CHARACTER SET clause of CREATE DATABASE. Metadata is the value that leads us to the actual. Metadata in a relational DBMS stores data about Constraints, Table Relationships, Data Types, Columns, Tables, and so on. According to Gartner, metadata is information that describes various facets of an information asset to improve its usability throughout its life cycle. It describes the context and information about data, the way that data is stored and the various relations among data. A default character set should always be specified for a database when it is created with CREATE DATABASE. Metadata in DBMS is characterized as data about data. Specifying a Default Character SetĪ default character set designation of a database specifies the character set the server uses to transliterate and store CHAR, VARCHAR, and text Blob data in the database when no other character set information is provided. ![]() For more information about table creation, see Creating a Table. Metadata in a data warehouse is similar to the data dictionary or the data catalog in a database management system. Applications that perform both data definition and data manipulation must declare tables with DECLARE TABLE before creating and populating them. If a database is created without a table, it cannot be successfully opened by another program. An application that creates a database must be preprocessed with the gpre -m switch.
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