The !0 notation denotes the first diagram. 17.3 Constant definition You can define constant using the !define directive. As in C language, a constant name can only use alphanumeric and underscore characters include directive to define all your constants in a single file that you include in your diagram. Constant can be undefined with the !undef XXX directive. You can also specify constants within the command directives will be included only if the constant after the !ifdef directive has been defined before. You can also provide a !else part which will be included if the constant has not been defined. @startuml

The !0 notation denotes the first diagram. 19.3 Constant definition You can define constant using the !define directive. As in C language, a constant name can only use alphanumeric and underscore characters include directive to define all your constants in a single file that you include in your diagram. Constant can be undefined with the !undef XXX directive. You can also specify constants within the command directives will be included only if the constant after the !ifdef directive has been defined before. You can also provide a !else part which will be included if the constant has not been defined. @startuml

The !0 notation denotes the first diagram. 17.3 Constant definition You can define constant using the !define directive. As in C language, a constant name can only use alphanumeric and underscore characters include directive to define all your constants in a single file that you include in your diagram. Constant can be undefined with the !undef XXX directive. You can also specify constants within the command directives will be included only if the constant after the !ifdef directive has been defined before. You can also provide a !else part which will be included if the constant has not been defined. @startuml

The !0 notation denotes the first diagram. 17.3 Constant definition You can define constant using the !define directive. As in C language, a constant name can only use alphanumeric and underscore characters include directive to define all your constants in a single file that you include in your diagram. Constant can be undefined with the !undef XXX directive. You can also specify constants within the command directives will be included only if the constant after the !ifdef directive has been defined before. You can also provide a !else part which will be included if the constant has not been defined. @startuml

formula e = mc2, I really felt like a glass of liquid H2O ! varname – constant – database Die Verwendung von varname und constant sollte offensichtlich sein. Das Tag kann für Datenbankobjekte

werden, wenn die Auswahl eines bestimmten Elements nichts zurückgibt oder wenn ein Array-Feld [constant] NULL ist. Constraints Es können fünf Arten von Einschränkungen angegeben werden. Sie sind: • selectable-SP-outparm Deklarierter Name eines Ausgabeparameters einer auswählbaren gespeicherten Prozedur constant Eine Konstante context-variable Kontextvariable function-call Skalar-, Aggregat- oder Fensterfunktionsausdruck INTEGER, name VARCHAR (30) ) RETURNS ( c INTEGER, str VARCHAR(100)) AS BEGIN -- assigning a constant c = 0; str = ''; SUSPEND; -- assigning expression values c = a + b; str = name || CAST(b