FUNDAMENTALS OF COMPUTER

Detailed explanation-1: -A class is a collection of similar objects with shared structure (attributes) and behavior (methods). In a general sense, a class resembles the ER model’s entity set. However, a class is different from an entity set in that it contains a set of procedures known as methods.

Detailed explanation-2: -A class is a collection of similar objects with shared structure (attributes) and behavior (methods.) Therefore, a class resembles an entity set. However, a class also includes a set of procedures known as methods.

Detailed explanation-3: -The Object-Relational data model refers to a combination of a Relational database model and an Object-Oriented database model.

Detailed explanation-4: -A record is a collection of related fields. An Employee record may contain a name field(s), address fields, birthdate field and so on. A file is a collection of related records. Tables are also called datasheets. Each table in a database holds data about a different, but related, subject.

Detailed explanation-5: -An object–relational database (ORD), or object–relational database management system (ORDBMS), is a database management system (DBMS) similar to a relational database, but with an object-oriented database model: objects, classes and inheritance are directly supported in database schemas and in the query language.