Answer and Explanation:
These terms are defined as:
1. Entity:
An entity can be defined as any object that exist physically. it can be referred to any object that is distinguishable, singular and can be recognized like a firm, a person, etc.
2. Attribute:
An attribute can be defined as the specification of any entity.
For instance, if a bike is an entity then wheels, etc are its attributes.
3. Relationship:
It can be defined as any link or connection that exist between 2 entities.
Joseph Henry in about 1835. He is American and he made something called a relay.
Answer:
Window task manager cannot perform the following task:
1. It cannot Delete a program from hard disk.
2. It cannot view these application that are running at back ground.
3. It cannot recheck CPU usage
4. It cannot safe it self by virus.`