To answer this question, you need to understand the concept of error handling in SQL.

Option A) True - This option is incorrect. SQL does have error handling mechanisms in place to handle errors that occur during data manipulation.

Option B) False - This option is correct. SQL does not have a built-in facility for programmed handling of errors that arise during the manipulation of data. However, SQL does provide some error handling features such as TRY-CATCH blocks in certain implementations like Microsoft SQL Server.

The correct answer is B) False. This option is correct because SQL does not have a facility for programmed handling of errors that arise during the manipulation of data.

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To answer this question, you need to understand the purpose and use cases of database triggers. Let's go through each option to understand why it is correct or incorrect:

Option A) To duplicate the functionality of other triggers - This option is incorrect. Triggers are not designed to duplicate the functionality of other triggers. Instead, triggers are used to perform specific actions when certain events occur in the database.

Option B) To replicate built-in constraints in the Oracle server such as primary key and foreign key - This option is incorrect. Built-in constraints like primary key and foreign key are not replicated using triggers. Constraints are used to enforce data integrity rules, while triggers are used to perform actions based on specific events.

Option C) To guarantee that when a specific operation is performed, related actions are performed - This option is correct. One of the main purposes of database triggers is to ensure that when a specific operation (such as an insert, update, or delete) is performed on a table, related actions or operations are also performed. Triggers can be used to automatically update other tables, perform calculations, or enforce business rules.

Option D) For centralized, global operations that should be fired for the triggering statement, regardless of which user or application issues the statement - This option is correct. Triggers can be designed to perform centralized, global operations that should be triggered regardless of the user or application issuing the statement. This allows for consistent and standardized actions to be performed for specific events.

Therefore, the correct answers are C) To guarantee that when a specific operation is performed, related actions are performed and D) For centralized, global operations that should be fired for the triggering statement, regardless of which user or application issues the statement.

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To answer this question, let's go through each option to understand why it is correct or incorrect:

Option A) Packages can be nested - This option is correct. In many programming languages, packages can be organized hierarchically, allowing for nested packages. This helps in organizing and structuring code into logical units.

Option B) You can pass parameters to packages - This option is incorrect. Packages are typically used to group related code and resources, but they are not designed to accept parameters directly. Parameters are usually passed to functions or methods within a package.

Option C) A package is loaded into memory each time it is invoked - This option is incorrect. Once a package is loaded into memory, it remains in memory until the program terminates or the package is explicitly unloaded. Packages are not loaded into memory each time they are invoked.

Option D) The contents of packages can be shared by many applications - This option is correct. Packages are designed to provide a way to organize and share code and resources. Many applications can use the same package, allowing them to access and utilize the contents of the package.

Option E) You can achieve information hiding by making package constructs private - This option is correct. Packages often provide mechanisms for encapsulating code and resources. By making certain constructs within a package private, you can control the visibility and accessibility of those constructs, achieving information hiding.

The correct answers are D and E. These options are correct because packages can be shared by many applications, and information hiding can be achieved by making package constructs private.

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To answer this question, let's go through each option to understand why it is correct or incorrect:

Option A) A stored procedure uses the DECLARE keyword in the procedure specification to declare formal parameters. - This option is incorrect. The DECLARE keyword is used in PL/SQL to declare local variables, not formal parameters for a stored procedure.

Option B) A stored procedure is named PL/SQL block with at least one parameter declaration in the procedure specification. - This option is incorrect. While a stored procedure can have parameters, it is not necessary for it to have at least one parameter declaration.

Option C) A stored procedure must have at least one executable statement in the procedure body. - This option is correct. A stored procedure is a named PL/SQL block that contains a series of executable statements. It must have at least one executable statement in its body to perform a specific task or operation.

Option D) A stored procedure uses the DECLARE keyword in the procedure body to declare formal parameters. - This option is incorrect. The DECLARE keyword is used to declare local variables within a PL/SQL block, not formal parameters for a stored procedure.

The correct answer is Option C. This option is correct because a stored procedure must have at least one executable statement in its body to perform a specific task or operation.

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