Category Archives: plsql

Khóa học miễn phí PL/SQL – Object Oriented nhận dự án làm có lương

PL/SQL – Object Oriented In this chapter, we will discuss Object-Oriented PL/SQL. PL/SQL allows defining an object type, which helps in designing object-oriented database in Oracle. An object type allows you to create composite types. Using objects allow you to implement real world objects with specific structure of data and methods for operating it. Objects […]

Khóa học miễn phí PL/SQL – Strings nhận dự án làm có lương

PL/SQL – Strings The string in PL/SQL is actually a sequence of characters with an optional size specification. The characters could be numeric, letters, blank, special characters or a combination of all. PL/SQL offers three kinds of strings − Fixed-length strings − In such strings, programmers specify the length while declaring the string. The string […]

Khóa học miễn phí PL/SQL – Procedures nhận dự án làm có lương

PL/SQL – Procedures In this chapter, we will discuss Procedures in PL/SQL. A subprogram is a program unit/module that performs a particular task. These subprograms are combined to form larger programs. This is basically called the ”Modular design”. A subprogram can be invoked by another subprogram or program which is called the calling program. A […]