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The DUAL table is a special one-row, one-column table present by default in Oracle and other database installations. In Oracle, the table has a single VARCHAR2(1) column called DUMMY that has a value of 'X'. It is suitable for use in selecting a pseudo column such as SYSDATE or USER.
Oracle MySQL PostgreSQL MS SQL Server ODBC JDBC SQLite Other Programming language; DatabaseSpy: Altova: 2019-04-02: 2019r3 [1] Proprietary: Yes No No Yes Yes Yes Yes Yes Yes IBM Db2, Sybase, MS Access: C++: Database Workbench: Upscene Productions 2024-05-14 6.5.0 Proprietary: Yes needs Wine: needs Wine: Yes Yes Yes Yes Yes Yes InterBase ...
In Oracle Database (since version 9.0), AL32UTF8 [81] means UTF-8, while UTF-8 means CESU-8. In HP PCL, the Symbol-ID for UTF-8 is 18N. [82] There are several current definitions of UTF-8 in various standards documents: RFC 3629 / STD 63 (2003), which establishes UTF-8 as a standard internet protocol element
An alternative to converting the code is the use of software that can run the code from the old system on the new system. Examples are Oracle Tuxedo Application Rehosting Workbench , Morphis - Transformer and products for LINC 4GL , Ispirer - products and services for database and application migration.
The btrfs-convert tool exploits this ability to do an in-place conversion of an ext2/3/4 or ReiserFS file system, by nesting the equivalent Btrfs metadata in its unallocated space—while preserving an unmodified copy of the original file system. [68]
PL/SQL refers to a class as an "Abstract Data Type" (ADT) or "User Defined Type" (UDT), and defines it as an Oracle SQL data-type as opposed to a PL/SQL user-defined type, allowing its use in both the Oracle SQL Engine and the Oracle PL/SQL engine. The constructor and methods of an Abstract Data Type are written in PL/SQL.
Oracle's Virtual Box has a Linux-based tool which allows the conversion of a dd image of an existing hard drive; Microsoft provides the SysInternals disk2vhd utility for making images from Windows XP or later systems to be used with Windows Virtual PC, Microsoft Virtual Server or Hyper-V.
Data conversion is the conversion of computer data from one format to another. Throughout a computer environment, data is encoded in a variety of ways. For example, computer hardware is built on the basis of certain standards, which requires that data contains, for example, parity bit checks.