A Guide to SQL
9th Edition
ISBN: 9781337668880
Author: Pratt
Publisher: Cengage
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Chapter 7, Problem 11SCG
Program Plan Intro
Foreign key:
- A primary key attribute in one table is the foreign key for another table. In logical way, a foreign key is used to establish a relationship between two tables.
- A foreign key is used for identifying a row of another table uniquely.
- Foreign keys are represented in italic form.
ALTER TABLE Statement:
- “ALTER TABLE” statement comes under Data Definition Language (DDL).
- It is used to modify column, add constraints, add column(s), drop column, rename column name and table name, drop constraints, and so on.
Syntax:
The Syntax to drop constraint is as follows:
ALTER TABLE table_Name ADD CONSTRAINT constraint_Name;
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In 32-bit MSAM, You were given the following negative array. write a program that converts each array element to its positive representation. Then add all these array elements and assign them to the dl register. .data myarr sbyte -5, -6, -7, -4.code ; Write the rest of the program and paste the fully working code in the space below.
the dl register should have the value 22 after summing up all elements in the array.
Microprocessor 8085 Lab Experiment
Experiment No. 3 Logical Instructions
Write programs with effects
1. B=(2Dh XOR D/2) - (E AND 2Eh+1) when E=53, D=1Dh
2. HL= (BC+HL) XOR DE (use register pair when necessary), when BC=247,
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Chapter 7 Solutions
A Guide to SQL
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