Search results
Results From The WOW.Com Content Network
Saving a ddl file in Oracle SQL Developer. In the context of SQL, data definition or data description language (DDL) is a syntax for creating and modifying database objects such as tables, indices, and users. DDL statements are similar to a computer programming language for defining data structures, especially database schemas.
Also, a local object pool enables some parts of the execution to be deferred from the database server (e.g. tuple insertion and deletion, DDL statements), thus lowering the database server load. Since the connection broker is not bound to the same machine as the database server, CUBRID can take advantage of the hardware resources of several ...
SQL statements also include the semicolon (";") statement terminator. Though not required on every platform, it is defined as a standard part of the SQL grammar. Insignificant whitespace is generally ignored in SQL statements and queries, making it easier to format SQL code for readability.
ldstr <string> Push a string object for the literal string. Object model instruction 0xD0 ldtoken <token> Convert metadata token to its runtime representation. Object model instruction 0xFE 0x07 ldvirtftn <method> Push address of virtual method on the stack. Object model instruction 0xDD leave <int32 (target)> Exit a protected region of code.
The terms data dictionary and data repository indicate a more general software utility than a catalogue. A catalogue is closely coupled with the DBMS software. It provides the information stored in it to the user and the DBA, but it is mainly accessed by the various software modules of the DBMS itself, such as DDL and DML compilers, the query optimiser, the transaction processor, report ...
DQL statements are used for performing queries on the data within schema objects. The purpose of DQL commands is to get the schema relation based on the query passed to it. Although often considered part of DML, the SQL SELECT statement is strictly speaking an example of DQL. When adding FROM or WHERE data manipulators to the SELECT statement ...
Using variables in a numeric context (e.g., addition, subtraction) invokes a well-defined conversion in case the string is not a canonical number, such as "123 Main Street". MUMPS has a large set of string manipulation operators, and its hierarchical variable management system extends to both RAM-based and disk-based variables.
statements «else statements» end if: if condition 1 then statements elsif condition 2 then statements... «else statements» end if: case expression of when set1 : statements ... «otherwise: statements» end case: Modula-2: if condition then statements «else statements» end: if condition 1 then statements elsif condition 2 then