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A package is a collection of procedures, functions, and other related objects. It exists in the database and provides a convenient way to group related programming objects together. Packages are perfect for organizing related objects, and are also helpful for managing dependencies. In a package, you can create one or more procedures, functions, and variables, which can be called from outside the package. Oracle also provides a number of predefined packages that can be used in your applications.
Packages are a great way to keep your code organized and reduce the amount of code that needs to be written. When you need to use a certain procedure or function, you can call it directly from the package. This makes it easier to find the code you need and reduces the amount of time you spend writing code. Packages also make it easier to identify errors or bugs in your code. Any errors or bugs related to the package will be easier to detect and fix.
What is a Package Body?
A package body is the part of a package where the actual code is written. It is the part of the package that contains the source code for the procedures, functions, and other programming objects that are included in the package. The package body is compiled and stored in the database, just like any other object. It is important to note that the package body and the package specification must be kept in sync. Any changes made to the package specification must also be made in the package body, and vice versa.
The Difference Between Package and Package Body
The main difference between a package and a package body is that a package is the specification, while a package body is the implementation. The package is where the code is written, while the package body is where the code is compiled and stored in the database. The package body is the part of the package that contains the actual source code for the procedures, functions, and other programming objects.
The package specification is where the code is written, and it is the part of the package that is visible to the outside world. It contains the definitions of all of the programming objects that are included in the package, such as procedures and functions. The package body is the part of the package that is not visible to the outside world. It contains the actual source code for the programming objects that are included in the package.
Why Use Packages?
Packages are a great way to keep your code organized and reduce the amount of code that needs to be written. Packages make it easier to find the code you need and reduce the amount of time you spend writing code. Packages also make it easier to detect and fix any errors or bugs that may be present in the code.
Packages are also helpful for managing dependencies. When you need to use a certain procedure or function, you can call it directly from the package. This makes it easier to keep track of which objects are dependent on which other objects. This helps prevent errors or bugs from occurring due to incorrect dependencies.
Conclusion
In conclusion, packages and package bodies are two different parts of a package. The package is the specification, while the package body is the implementation. Packages are a great way to keep your code organized and reduce the amount of code that needs to be written. They are also helpful for managing dependencies and for detecting and fixing errors or bugs in the code.
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