what are OOP concepts ??

OOP concepts are the concepts which are supposed to be satisfied by a programming language inorder to call that programming language as an Object-Oriented programming language.

since c programming language doesn't satisfy the three OOP concepts, we cannot call c as Object-Oriented programming language.

The three OOP concepts are:
1) Encapsulation
2) polymorphism
3) Inheritance

The birth of OOP concepts took place with encapsulation. Thus sometimes people call encapsulation as the backbone of OOP concepts.

what is the difference between static loading and dynamic loading ??

Static Loading:
The concept of allocating memory and loading the executable code of the functionality to the RAM before the function is called (or) before the program is under execution is known as static loading. static loading increases the overhead on the system. Thus, static loading is always disadvantageous.

Any structured programming language program would be based on the concept of static loading. Thus c programs would be working based on the concept of static loading.

Dynamic Loading:
The concept of allocating memory and loading the executable code of a function to the RAM dynamically at the run-time as and when a function call is made i.e., when the program is under execution , is known as dynamic loading.

Any object oriented programming language would be working based on the concept of dynamic loading. Thus java, works based on the concept of dynamic loading only. Dynamic loading reduces the overhead on the system. Thus, always dynamic loading is advantageous.

what is First Normal Form ??

1. eliminate repeating groups in individual tables.
2. create a separate table for each set of related data.
3. identify each set of related data with a primary key.

what is normalization and for what it is meant for ??

Normalization is the process of organizing data in a database. This includes creating tables and establishing relationships between those tables according to rules designed both to protect the data and to make the database more flexible by eliminating two factors: redundancy and inconsistent dependency. 

Redundant data wastes disk space and creates maintenance problems. If data that exists in more than one place must be changed, the data must be changed in exactly the same way in all locations. A customer address change is much easier to implement if that data is stored only in the Customers table and nowhere else in the database. 

What is an "inconsistent dependency"? While it is intuitive for a user to look in the Customers table for the address of a particular customer, it may not make sense to look there for the salary of the employee who calls on that customer. The employee's salary is related to, or dependent on, the employee and thus should be moved to the Employees table. Inconsistent dependencies can make data difficult to access; the path to find the data may be missing or broken. 

There are a few rules for database normalization. Each rule is called a "normal form." If the first rule is observed, the database is said to be in "first normal form." If the first three rules are observed, the database is considered to be in "third normal form." Although other levels of normalization are possible, third normal form is considered the highest level necessary for most applications.