PL/SQL is a modern, block-structured programming language. It provides several features that make developing powerful database applications very convenient. For example, PL/SQL provides procedural constructs, such as loops and conditional statements, that are not available in standard SQL.
You can directly enter SQL data manipulation language (DML) statements inside PL/SQL blocks, and you can use procedures supplied by Oracle to perform data definition language (DDL) statements.
PL/SQL code runs on the server, so using PL/SQL lets you centralize significant parts of your database applications for increased maintainability and security. It also enables you to achieve a significant reduction of network overhead in client/server applications.
Ошибки в программе:
Program primer - не хватает точки с запятой
Var a,b: integer;
Begin ; - не ошибка, необязательная точка с запятой
ReadLn( a,b); - не ошибка, лишний пробел после скобки, здесь и дальше не хватает пробелов между аргументами функций, знаками
s=a+b; - не хватает двоеточия в :=
m:=a*b;
d:=a:b; - переменная d не была описана; деление - это /
WriteLn(s);
WriteLn(m);
WriteLn(d)
End - не хватает точки.
Исправленная программа:
Program primer;
Var a, b: integer;
d: real;
Begin
ReadLn(a, b);
s := a + b;
m := a * b;
d := a / b;
WriteLn(s);
WriteLn(m);
WriteLn(d)
End.
