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Programmatic Constructs Interview Questions & Answers - Learning Mode

Programmatic Constructs Interview Questions & Answers - Learning Mode

In Oracle PL/SQL, a PACKAGE is a group of programmatic constructs combined ("packaged") into a single unit. The PL/SQL elements that may be included in a package are cursors, variables, exceptions, PL/SQL records and collection types, procedures, and functions.

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Programmatic Constructs Interview Questions & Answers - Learning Mode
Try Programmatic Constructs Interview Questions & Answers - Exam Mode
Question: What are the uses of Database Trigger ?

Answer: Database triggers can be used to automatic data generation, audit data modifications, enforce complex Integrity constraints, and customize complex security authorizations. Source:
Question: What is Database Trigger ?

Answer: A Database Trigger is procedure (set of SQL and PL/SQL statements) that is automatically executed as a result of an insert in,update to, or delete from a table. Source:
Question: What are the differences between Database Trigger and Integrity constraints ?

Answer: A declarative integrity constraint is a statement about the database that is always true. A constraint applies to existing data in the table and any statement that manipulates the table. A trigger does not apply to data loaded before the definition of the trigger, therefore, it does not guarantee all data in a table conforms to the rules established by an associated trigger. A trigger can be used to enforce transitional constraints where as a declarative integrity constraint cannot be used. Source:
Question: What are Oracle Schema Objects?

Answer: Schema objects are the logical structures that directly refer to the databases data. Schema objects include tables, views, sequences, synonyms, indexes, clusters, database triggers, procedures, functions packages and database links.
Question: What are the advantages of having a Package ?

Answer: Increased functionality (for example,global package variables can be declared and used by any proecdure in the package) and performance (for example all objects of the package are parsed compiled, and loaded into memory once) Source:
Question: What is a Package ?

Answer: A Package is a collection of related procedures, functions, variables and other package constructs together as a unit in the database. Source:
Question: What are the uses of Oracle Rollback Segment?

Answer: Rollback Segments are used :
To generate read consistent database information during database recovery to rollback uncommitted transactions for users
Question: What is a Procedure ?

Answer: A Procedure consist of a set of SQL and PL/SQL statements that are grouped together as a unit to solve a specific problem or perform a set of related tasks. Source:
Question: What is an Oracle Data Block?

Answer: ORACLE database's data is stored in data blocks. One data block corresponds to a specific number of bytes of physical database space on disk.

Oracle database consists of logical storage place which is called as blocks and the bytes in a block is set through DB_BLOCK parameter in parameter file
Question: What is difference between Procedures and Functions ?

Answer: A Function returns a value to the caller where as a Procedure does not. Source:
Question: What are the different types of PL/SQL program units that can be defined and stored in ORACLE database ?

Answer: Procedures and Functions,Packages and Database Triggers. Source:


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Latest 20 Questions
Payment of time- barred debt is: (a) Valid (b) Void (c) Illegal (d) Voidable
Consideration is defined in the Indian Contract Act,1872 in: (a) Section 2(f) (b) Section 2(e) (c) Section 2(g) (d) Section 2(d)
Which of the following is not an exception to the rule, "No consideration, No contract": (a) Natural love and affection (b) Compensation for involuntary services (c) Completed gift (d) Agency
Consideration must move at the desire of: (a) The promisor (b) The promisee (c) The promisor or any other party (d) Both the promisor and the promisee
An offer which is open for acceptance over a period of time is: (a) Cross Offer (b) Counter Offer (c) Standing Offer (d) Implied Offer
Specific offer can be communicated to__________ (a) All the parties of contract (b) General public in universe (c) Specific person (d) None of the above
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