Normalization: Normalization refers to the method of representing a database in the terms of relations, which are in the standard normal forms. It is organized in a table manner to reduce data redundancy and data dependency. First Normal Form (1NF): A table or a relation is said to be in first normal form if and only if the domain of each attribute consists of only unique values and the value of each attribute consists of only a single value. Second Normal Form (2NF): A table or a relation is said to be in second normal form if and only if it is in first normal form and no non-key attribute of the table is dependent on only a portion of the primary key. Third Normal Form (3NF): A table or a relation is said to be in third normal form if and only if it is in second normal form and if the candidate keys are its only determinants.

Question

EX:[AE00]=fa50h number of ones =1111 1010 0101 0000 Physical address=4AE00h=4000h*10h+AE00h Mov ax,4000 Mov ds,ax; DS=4000h mov ds,4000 X Mov ax,[AE00] ; ax=[ae00]=FA50h Mov cx,10; 16 bit in decimal Mov bl,0 *: Ror ax,1 Jnc ** Inc bl **:Dec cx Jnz * ;LSB⇒CF Cf=1 ; it jump when CF=0, will not jump when CF=1 HW1: rewrite the above example use another way

Answer 1

Question

Chapter 2, Problem 1CAT

Program Plan Intro

Normalization:

Normalization refers to the method of representing a database in the terms of relations, which are in the standard normal forms.

It is organized in a table manner to reduce data redundancy and data dependency.

First Normal Form (1NF):

A table or a relation is said to be in first normal form if and only if the domain of each attribute consists of only unique values and the value of each attribute consists of only a single value.

Second Normal Form (2NF):

A table or a relation is said to be in second normal form if and only if it is in first normal form and no non-key attribute of the table is dependent on only a portion of the primary key.

Third Normal Form (3NF):

A table or a relation is said to be in third normal form if and only if it is in second normal form and if the candidate keys are its only determinants.

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EX:[AE00]=fa50h number of ones =1111 1010 0101 0000 Physical address=4AE00h=4000h*10h+AE00h Mov ax,4000 Mov ds,ax; DS=4000h mov ds,4000 X Mov ax,[AE00] ; ax=[ae00]=FA50h Mov cx,10; 16 bit in decimal Mov bl,0 *: Ror ax,1 Jnc ** Inc bl **:Dec cx Jnz * ;LSB⇒CF Cf=1 ; it jump when CF=0, will not jump when CF=1 HW1: rewrite the above example use another way

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