18.Create the BO Layer

What is Bo layer in Java?

• A container for application data
• A programming language
• A design pattern for UI components
• A database management system

How to create data access layer in Java?

• Using JDBC
• Using HTML
• Using CSS
• Using JavaScript

What is Bo and DAO in Java?

• Business Object and Data Access Object
• Basic Operator and Data Analysis Output
• Byte Order and Database Access Object
• Binary Object and Database Algorithm Output

What are the 3 layers in Java?

• Presentation Layer, Service Layer, Data Layer
• Client Layer, Server Layer, Network Layer
• Frontend Layer, Backend Layer, Middleware Layer
• User Interface Layer, Database Layer, Business Logic Layer

What are the 4 layer in Java?

• Presentation Layer, Business Layer, Persistence Layer, Database Layer
• User Interface Layer, Application Layer, Storage Layer, Networking Layer
• Frontend Layer, Backend Layer, Database Layer, API Layer
• Application Layer, Transport Layer, Network Layer, Data Link Layer

How do you create a data access layer?

• Using CSS
• Using JavaScript
• Using JDBC
• Using HTML

What is business logic layer?

• A layer that handles database connections
• A layer that executes business functions
• A layer that focuses on UI design
• A layer that manages network communication

How to create database in Java?

• Import the required packages and use JDBC classes for database programming
• Use HTML to define the database structure
• Utilize CSS for creating the database schema
• Implement JavaScript functions for database creation

What is Bo vs entity?

• Bo and entity are the same concept
• Bo represents objects with identity defined by attributes, while entity has an identifier
• Bo represents database tables, while entity represents the data access layer
• Bo and entity are both Java interfaces used for database operations

Is DAO and POJO same?

• Yes, they both refer to the same design pattern
• DAO is a Java object with getters and setters, while POJO is a data access facade
• DAO handles data access and modification, while POJO only contains attribute values
• DAO and POJO are both used for UI design in Java applications