Which of the following normal form has historical importance and not commercially acceptable

The insert statement is used to insert or add a row of data into the table.

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SQL expert Rudy Limeback explains what normal form is used in most database projects.
What is 1st 2nd and 3rd normal form?
Which normal forms are most important?
Why is 1NF important?
What are the four 4 types of database normalization?

General:
insert into "tablename"
(first_column,...last_column)
values (first_value,...last_value);

ex.
insert into employee
(first, last, age, address, city, state)
values ('Luke', 'Duke', 45, '2130 Boars Nest',
'Hazard Co', 'Georgia');

Note: All strings should be enclosed between single quotes: 'string'

A binary 1:1 relationship is mapped much like a binary 1:M relationship, except the placement of the foreign key is somewhat arbitrary

Ex. (can have null)

PROFESSOR(ProfID, Name, Dept, SerialNum)
LAPTOP(SerialNum, Model, OS)

or (better/ no null)

PROFESSOR(ProfID, Name, Dept)
LAPTOP(SerialNum, Model, OS, ProfID)

SUPERTYPE(CommonIdent, CommonAttr1, CommonAttr2)

SUBTYPE1(CommonIdent, UniqueAttr1)
SUBTYPE2(CommonIdent, UniqueAttr2, UniqueAttr3)

As an alternative mapping for total specialization with disjoint relations, you can may consider dropping the supertype and creating tables for each subtype:

SUBTYPE1(CommonIdent, CommonAttr1, CommonAttr2, UniqueAttr1)
SUBTYPE2(CommonIdent, CommonAttr1, CommonAttr2, UniqueAttr2, UniqueAttr3)
SUBTYPE3(CommonIdent, CommonAttr1, CommonAttr2, UniqueAttr4)

note: commonattr1 is primary in all and same ID can appear in multiple tables

For composite attributes, include only the atomic attributes:
CUSTOMER(CustID, Age, Street, City, State, Zip)

For a composite attribute that serves as a primary key, you would need to underline all sub-attributes in the relation to clarify this (e.g., for a composite primary key such as FullName, this may break down into: FirstName, MiddleName, LastName).

SQL expert Rudy Limeback explains what normal form is used in most database projects.

Which normal form is used in most of database projects? Why? Can you explain with examples?

My guess is that most database projects are in third normal form. Why do I say this? Because I have seen thousands of database designs, and most of them are constructed quite well, by conscientious database designers, with due regard for functional dependencies—even though they might not know what "functional dependencies" are, they still manage to do it correctly.

Most SQL tutorials and references suggest that you should strive to attain third normal form. Here's a quick rundown on the first three normal forms:

First normal form (1NF) has two requirements: that there be a primary key, and that no column shall contain more than one value.
Second normal form (2NF) requires that all non-key columns are fully dependent on the entire primary key. If the table has only a single-column primary key, this requirement is easily met.
Third normal form (3NF) requires that there are no transitive dependencies, where one column depends on another column which depends on the primary key.

Normal forms are also inclusive. In other words, to be in 2NF, a design must already be in 1NF, and to be in 3NF it must already be in 2NF. Almost all database designers are trying to achieve 3NF, and most make it. Some consciously denormalize their design for a specific reason, but this occurs infrequently.

And yes, there are even higher normal forms, but very few designers take their designs that far. So the most common normal form is 3NF.

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What is 1st 2nd and 3rd normal form?

First, second, and third normal forms are the basic normal forms in database normalization: The first normal form (1NF) states that each attribute in the relation is atomic. The second normal form (2NF) states that non-prime attributes must be functionally dependent on the entire candidate key.

Which normal forms are most important?

Each rule is referred to as a normal form (1NF, 2NF, 3NF). The first three forms are the most important ones. There are more than 3 normal forms but those forms are rarely used and can be ignored without resulting in a non flexible data model. Each normal form constrains the data more than the previous normal form.

Why is 1NF important?

1NF is important because it is much more flexible than 0NF while being much easier to use when inserting, updating and reading data. This is because every type of data element (e.g. customer phone number) has exactly one column in which to find it and that column has only one piece of data for each record.