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Object-Oriented Programming and Database Management Systems
This deck covers fundamental concepts of Object-Oriented Programming (OOP) with Java and Database Management Systems (DBMS), including key OOP principles, Java data types, control structures, and DBMS architecture.
What is a variable in programming?
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Term
Definition
What is a variable in programming?
A variable is a storage location paired with an associated symbolic name (identifier) that contains some known or unknown quantity of information, or ...
What are primitive data types in Java?
Primitive data types in Java include byte, short, int, long (whole numbers), float, double (floating-point numbers), char (single Unicode character), ...
Define encapsulation in OOP.
Encapsulation is the mechanism of wrapping data (variables) and the code acting on the data (methods) together as a single unit (the class), enhancing...
What is the purpose of a constructor in Java?
A constructor is a special type of method that is automatically called when an object is created, primarily used to initialize the object's instance v...
Explain the concept of inheritance in OOP.
Inheritance is the mechanism by which one class (subclass) acquires the properties (fields and methods) of another class (superclass), promoting code ...
What is polymorphism in OOP?
Polymorphism is the ability of an object to take on many forms, allowing a single method name to behave differently based on the context, achieved thr...
Related Flashcard Decks
| Term | Definition |
|---|---|
What is a variable in programming? | A variable is a storage location paired with an associated symbolic name (identifier) that contains some known or unknown quantity of information, or a value. |
What are primitive data types in Java? | Primitive data types in Java include byte, short, int, long (whole numbers), float, double (floating-point numbers), char (single Unicode character), and boolean (true/false). |
Define encapsulation in OOP. | Encapsulation is the mechanism of wrapping data (variables) and the code acting on the data (methods) together as a single unit (the class), enhancing security and making code easier to maintain. |
What is the purpose of a constructor in Java? | A constructor is a special type of method that is automatically called when an object is created, primarily used to initialize the object's instance variables. |
Explain the concept of inheritance in OOP. | Inheritance is the mechanism by which one class (subclass) acquires the properties (fields and methods) of another class (superclass), promoting code reuse and establishing an 'IS-A' relationship. |
What is polymorphism in OOP? | Polymorphism is the ability of an object to take on many forms, allowing a single method name to behave differently based on the context, achieved through method overloading and overriding. |
What is the difference between checked and unchecked exceptions in Java? | Checked exceptions are exceptions that the compiler forces you to handle, while unchecked exceptions (runtime exceptions) occur due to programming logic errors and are not forced to be handled by the compiler. |
What is a database management system (DBMS)? | A DBMS is a collection of programs that enables users to create and maintain a database, providing processes for defining, constructing, and manipulating the database for various applications. |
What are the three levels of DBMS architecture? | The three levels are the physical/internal level (how data is stored), the conceptual/logical level (what data is stored and relationships), and the external/view level (user-specific views of the database). |
What is the role of a Database Administrator (DBA)? | A DBA oversees and manages the database system, including defining schemas, security, integrity checks, backup/recovery procedures, and monitoring performance. |