Question Discussion & Solution

The Correct Answer is 24.

Key Points

• Human ribs are flat bones that form part of the rib cage to help protect internal organs.
• Humans usually have 24 ribs, in 12 pairs.
• The first seven pairs are attached directly to the sternum by costal cartilages and are called true ribs.
• The 8th, 9th, and 10th pairs are called false ribs, they do not join the sternum directly but are connected to the 7th rib by cartilage.

Additional Information 

• Human ribs are flat bones that form part of the rib cage to help protect internal organs.
• Humans usually have 24 ribs, in 12 pairs.
• Only 1 in 500 people have an extra rib known as a Cervical rib. 
• At the front of the body, most of the ribs are joined by costal cartilage to the sternum.
• Ribs connect to vertebrae at the costovertebral joints.

Just as Needle is a part/component of the Clock, similarly Blade is a part/component of Fan.

Thus the related word pair is Fan : Blade.

Concept:

ER model describes data as entities, relationships, and attributes. It is a high-level conceptual data model. This model is used to define the data elements and relationships for a specified system.

Entity:

The entity is a thing in the real world with an independent existence. An entity may be an object with physical existence. For example particular person, car or it may be an object with a conceptual existence For example company, job, etc.

Attributes:

Each entity has attributes – the particular properties that describe it.

Relationship:

It is used to describe the relation between two entities.

Explanation:

E-R Diagram is design level task and Relational model is implementation.

The relational model is implemented from E-R Diagram and in this, it gets rid of the multivalued attributes.

Relations produced from the E - R Model will always be in 1NF, that is, Simple atomic values with non-multivalued attributes.

NOTES:

• A CASE tool is a generic term used to denote any form of automated support for software engineering, in a more restrictive sense a CASE tool can mean any tool used to automate some activity associated with software development
• Some of the CASE tools assist in phase-related tasks such as specification, structured analysis, design, coding, testing, etc. and others to non-phase activities such as project management and configuration management
• The primary objectives of using any CASE tool are:

1. To increase productivity.
2. To help produce better quality software at a lower cost.

• For most computer languages, the name of the file that holds the source code to a program is immaterial
• However, in Java the name given to a source file is very important
• The Java compiler requires that a source file uses the .java filename extension
• Only file.java follow the properties in the given options
• In Java, a source file is officially called a compilation unit; It is a text file that contains one or more class definitions