Design a database to store details about U.S. presidents and their t.pdf

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Design a database to store details about U.S. presidents and their terms in office. Also, record details of their date and place of birth, gender, and political party affiliation (e.g., Caluthumpian Progress Party). You are required to record the sequence of presidents so the predecessor and successor of any president can be identified. How will you model the case of Grover Cleveland who served nonconsecutive terms as president? Is it feasible that political party affiliation may change? If so, how will you handle it? In populating your solution include the following information (note this is not the format you will store it in the database): Chester Arthur Born 10/05/1829 Whig until 01/01/1854 Republican after that 21st president Grover Cleveland Born 03/18/1837 Democrat his entire career 22nd President 24th President Benjamin Harrison Born 08/20/1833 Whig until 01/01/1856 Republican after that 23rd President Chester Arthur Born 10/05/1829 Whig until 01/01/1854 Republican after that 21st president Grover Cleveland Born 03/18/1837 Democrat his entire career 22nd President 24th President Benjamin Harrison Born 08/20/1833 Whig until 01/01/1856 Republican after that 23rd President Solution Create table President( PresidentID integer(6) primary key, Name varchar (30) Place varchar (20), Dateofbirth date, Gender varchar(1) check in (m,f), Ruling_startdate date, Ruling_end date date, Affiliation_party varchar(20), Terms varchar(30)); We will design all the attributes under one table or define separate table for president personal details and party details. We can separate the tables now. President table: Create table president( PresidentId integer(6) primary key, Name varchar(30) foreign key, Dateofbirth date, Gender varchar(1) check in (m,f) Affiliation_party varchar(20), Terms varchar(20)); Create table pres_det( presidentID integer(6) primarykey, Place_of_elect varchar(20), Birthdate date, Ruling_startdate date, Ruling_enddate date, ); CREATE SEQUENCE seq_presidentID MINVALUE 10000 START WITH 10000 INCREMENT BY 100 Cycle. If we execute this sequence president id is set to default value and increment by 100 for every president value. DECLARE @maxTerm INT DECLARE @minTerm INT SELECT @maxTerm = MAX(term_id), @minTerm = MIN(term_id) FROM President AS p JOIN President AS p ON p. presidentId = pres_det.presidentId WHERE p.Name = \'name\' Then predecessor is SELECT p.Name FROM pres_det AS t JOIN President AS p ON p.presidentId = t.presidentId WHERE p.term = @minTerm - 1 To find the successor is SELECT p.Name FROM pres_det AS t JOIN President AS p ON p.presidentId = t.presidentId WHERE p.term = @maxTerm +1.

Education

22nd President
24th President
Benjamin
Harrison
Born 08/20/1833
Whig until 01/01/1856
Republican after that
23rd President
Solution
Create table President(
PresidentID integer(6) primary key,
Name varchar (30)
Place varchar (20),
Dateofbirth date,
Gender varchar(1) check in (m,f),
Ruling_startdate date,
Ruling_end date date,
Affiliation_party varchar(20),
Terms varchar(30));
We will design all the attributes under one table or define separate table for president personal
details and party details.
We can separate the tables now.
President table:
Create table president(
PresidentId integer(6) primary key,
Name varchar(30) foreign key,
Dateofbirth date,
Gender varchar(1) check in (m,f)
Affiliation_party varchar(20),
Terms varchar(20));
Create table pres_det(
presidentID integer(6) primarykey,
Place_of_elect varchar(20),
Birthdate date,

Ruling_startdate date,
Ruling_enddate date,
);
CREATE SEQUENCE seq_presidentID
MINVALUE 10000
START WITH 10000
INCREMENT BY 100
Cycle.
If we execute this sequence president id is set to default value and increment by 100 for every
president value.
DECLARE @maxTerm INT
DECLARE @minTerm INT
SELECT @maxTerm = MAX(term_id), @minTerm = MIN(term_id) FROM President AS p
JOIN President AS p
ON p. presidentId = pres_det.presidentId
WHERE p.Name = 'name'
Then predecessor is
SELECT p.Name FROM pres_det AS t
JOIN President AS p
ON p.presidentId = t.presidentId
WHERE p.term = @minTerm - 1
To find the successor is
SELECT p.Name FROM pres_det AS t
JOIN President AS p
ON p.presidentId = t.presidentId
WHERE p.term = @maxTerm +1

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The sum of two integers is 19. The larger integer is 5 less than twice the smaller. Find the two integers. Solution Let the larger integer be X and smaller integer be Y Given sum of two integers is 19 i.e., X+Y=19 The larger integer is 5 less than twice the smaller i.e., X=2Y-5 X+Y=19 By plugging X=2Y-5 in X+Y=19 we get 2Y-5+Y=19 3Y=24 Y=24/3=8 X+Y=19 X+8=19 X=19-8=11 Therefore the two integers are 11,8.

The sum of two integers is 19. The larger integer is 5 less than twi.pdf

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