remade tables

Remade tables as discussed, changed some types around, made the population tables

data/OverallSchema.sql

@@ -6,40 +6,25 @@ CREATE TABLE Countries(
     country_name VARCHAR(128) UNIQUE NOT NULL
 );
 
--- each region has a unique region code and unique name
--- no nulls
--- region codes are used in the rest of the tables as keys
-CREATE TABLE Regions(
-    region_code VARCHAR(5) PRIMARY KEY,
-    region_name VARCHAR(128) UNIQUE NOT NULL    
-);
-
 -- encaptures data about the region
 -- longittude and latitude specify certain part of the region
-CREATE TABLE Regions_Information(
-    region_code VARCHAR(5) PRIMARY KEY,
+CREATE TABLE Regions(
+    region_code BIGINT IDENTITY(1, 1) PRIMARY KEY,
+    region_name VARCHAR(128) NOT NULL,
     country_code VARCHAR(2) NOT NULL,
     longitude FLOAT NULL,
     latitude FLOAT NULL,
-    FOREIGN KEY (region_code) REFERENCES Regions(region_code),
     FOREIGN KEY (country_code) REFERENCES Countries(country_code)
 );
 
--- each distict has a unique district code and name
--- district codes are primary keys
-CREATE TABLE Districts(
-    district_code VARCHAR(8) PRIMARY KEY,
-    district_name VARCHAR(128) UNIQUE NOT NULL
-);
-
 -- information of the location of the district
 -- longitude and latitude specify certain part of the district
-CREATE TABLE Districts_Information(
-    district_code VARCHAR(8) PRIMARY KEY,
+CREATE TABLE Districts(
+    district_code BIGINT IDENTITY(1, 1) PRIMARY KEY,
+    district_name VARCHAR(128) NOT NULL,
     region_code VARCHAR(5) NOT NULL,
     longitude FLOAT NULL,
     latitude FLOAT NULL,
-    FOREIGN KEY (district_code) REFERENCES Districts(district_code),
     FOREIGN KEY (region_code) REFERENCES Regions(region_code)
 );
 
@@ -47,8 +32,8 @@ CREATE TABLE Districts_Information(
 -- source ID is autogenerated
 -- source info is unique
 CREATE TABLE Sources(
-    source_id INT IDENTITY(1, 1) PRIMARY KEY,
-    source_informatoin VARCHAR(256) UNIQUE NOT NULL
+    source_id BIGINT IDENTITY(1, 1) PRIMARY KEY,
+    source_information VARCHAR(256) UNIQUE NOT NULL
 );
 
 -- information on cases, recovery numbers, and deaths
@@ -56,7 +41,7 @@ CREATE TABLE Sources(
 CREATE TABLE Cases_Per_Country(
     country_code VARCHAR(2) PRIMARY KEY,
     date_collected DATETIME2 NOT NULL,
-    source_id INT NOT NULL,
+    source_id BIGINT NOT NULL,
     death_numbers INT NULL,
     case_numbers INT NULL,
     recovery_numbers INT NULL,
@@ -67,9 +52,9 @@ CREATE TABLE Cases_Per_Country(
 -- information on cases, recovery numbers, and deaths
 -- per region
 CREATE TABLE Cases_Per_Region(
-    region_code VARCHAR(5) PRIMARY KEY,
+    region_code BIGINT PRIMARY KEY,
     date_collected DATETIME2 NOT NULL,
-    source_id INT NOT NULL,
+    source_id BIGINT NOT NULL,
     death_numbers INT NULL,
     case_numbers INT NULL,
     recovery_numbers INT NULL,
@@ -80,9 +65,9 @@ CREATE TABLE Cases_Per_Region(
 -- information on cases, recovery numbers, and deaths
 -- per district
 CREATE TABLE Cases_Per_District(
-    district_code VARCHAR(8) PRIMARY KEY,
+    district_code BIGINT PRIMARY KEY,
     date_collected DATETIME2 NOT NULL,
-    source_id INT NOT NULL,
+    source_id BIGINT NOT NULL,
     death_numbers INT NULL,
     case_numbers INT NULL,
     recovery_numbers INT NULL,
@@ -94,7 +79,7 @@ CREATE TABLE Cases_Per_District(
 CREATE TABLE Vaccinations_Per_Country(
     vaccination_rate INT NOT NULL,
     country_code VARCHAR(2) PRIMARY KEY,
-    source_id INT NOT NULL,
+    source_id BIGINT NOT NULL,
     FOREIGN KEY (country_code) REFERENCES Countries(country_code),
     FOREIGN KEY (source_id) REFERENCES Sources(source_id)
 );
@@ -102,8 +87,8 @@ CREATE TABLE Vaccinations_Per_Country(
 -- keeps track of vaccinations per Region
 CREATE TABLE Vaccinations_Per_Region(
     vaccination_rate INT NOT NULL,
-    region_code VARCHAR(5) PRIMARY KEY,
-    source_id INT NOT NULL,
+    region_code BIGINT PRIMARY KEY,
+    source_id BIGINT NOT NULL,
     FOREIGN KEY (region_code) REFERENCES Regions(region_code),
     FOREIGN KEY (source_id) REFERENCES Sources(source_id)
 );
@@ -111,8 +96,8 @@ CREATE TABLE Vaccinations_Per_Region(
 -- keeps track of vaccinations per District
 CREATE TABLE Vaccinations_Per_District(
     vaccination_rate INT NOT NULL,
-    district_code VARCHAR(8) PRIMARY KEY,
-    source_id INT NOT NULL,
+    district_code BIGINT PRIMARY KEY,
+    source_id BIGINT NOT NULL,
     FOREIGN KEY (district_code) REFERENCES Districts(district_code),
     FOREIGN KEY (source_id) REFERENCES Sources(source_id)
 );
@@ -120,7 +105,7 @@ CREATE TABLE Vaccinations_Per_District(
 -- keeps track of strain data per country
 CREATE TABLE Strains_Per_Country(
     country_code VARCHAR(2) PRIMARY KEY,
-    source_id INT NOT NULL,
+    source_id BIGINT NOT NULL,
     alpha_rate INT NULL,
     beta_rate INT NULL,
     gamma_rate INT NULL,
@@ -132,7 +117,7 @@ CREATE TABLE Strains_Per_Country(
 
 -- keeps track of strain data per region
 CREATE TABLE Strains_Per_Region(
-    region_code VARCHAR(5) PRIMARY KEY,
+    region_code BIGINT PRIMARY KEY,
     source_id INT NOT NULL,
     alpha_rate INT NULL,
     beta_rate INT NULL,
@@ -145,7 +130,7 @@ CREATE TABLE Strains_Per_Region(
 
 -- keeps track of strain data per district
 CREATE TABLE Strains_Per_District(
-    district_code VARCHAR(8) PRIMARY KEY,
+    district_code BIGINT PRIMARY KEY,
     source_id INT NOT NULL,
     alpha_rate INT NULL,
     beta_rate INT NULL,
@@ -159,7 +144,7 @@ CREATE TABLE Strains_Per_District(
 -- age related data on covid per country
 CREATE TABLE Age_Per_Country(
     country_id VARCHAR(2) PRIMARY KEY,
-    source_id INT NOT NULL,
+    source_id BIGINT NOT NULL,
     age_group VARCHAR(64) NOT NULL,
     case_number INT NULL,
     recovery_number INT NULL,
@@ -175,8 +160,8 @@ CREATE TABLE Age_Per_Country(
 
 -- age related data on covid per region
 CREATE TABLE Age_Per_Region(
-    region_id VARCHAR(5) PRIMARY KEY,
-    source_id INT NOT NULL,
+    region_id BIGINT PRIMARY KEY,
+    source_id BIGINT NOT NULL,
     age_group VARCHAR(64) NOT NULL,
     case_number INT NULL,
     recovery_number INT NULL,
@@ -192,8 +177,8 @@ CREATE TABLE Age_Per_Region(
 
 -- age related data on covid per district
 CREATE TABLE Age_Per_District(
-    district_id VARCHAR(8) PRIMARY KEY,
-    source_id INT NOT NULL,
+    district_id BIGINT PRIMARY KEY,
+    source_id BIGINT NOT NULL,
     age_group VARCHAR(64) NOT NULL,
     case_number INT NULL,
     recovery_number INT NULL,
@@ -205,4 +190,28 @@ CREATE TABLE Age_Per_District(
     death_rate INT NULL,
     FOREIGN KEY (district_id) REFERENCES Districts(district_code),
     FOREIGN KEY (source_id) REFERENCES Sources(source_id)
+);
+
+-- population per country on a given date
+CREATE TABLE Population_Per_Country(
+    country_code VARCHAR(2) PRIMARY KEY,
+    population_amount BIGINT NOT NULL,
+    date_collected DATETIME2 NOT NULL,
+    FOREIGN KEY (country_code) REFERENCES Countries(country_code)
+);
+
+-- population per region on a given date
+CREATE TABLE Population_Per_Region(
+    region_code BIGINT PRIMARY KEY,
+    population_amount BIGINT NOT NULL,
+    date_collected DATETIME2 NOT NULL,
+    FOREIGN KEY (region_code) REFERENCES Regions(region_code)
+);
+
+-- population per district on a given date
+CREATE TABLE Population_Per_District(
+    district_code BIGINT PRIMARY KEY,
+    population_amount BIGINT NOT NULL,
+    date_collected DATETIME2 NOT NULL,
+    FOREIGN KEY (district_code) REFERENCES Districts(district_code)
 );
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