Added instructions to create databse schema

Scripts/DataCleaning/SQL_Queries/db_creaation.sql

@@ -0,0 +1,65 @@
+CREATE TABLE IF NOT EXISTS Movies (
+    MovieID BIGINT PRIMARY KEY AUTO INCREMENT,
+    MovieURI TEXT UNIQUE NOT NULL
+);
+
+
+CREATE TABLE IF NOT EXISTS WikiPageIDs (
+    MovieID BIGINT PRIMARY KEY,
+    PageID INTEGER UNIQUE NOT NULL,
+    FOREIGN KEY(MovieID) REFERENCES Movies(MovieID)
+);
+
+
+CREATE TABLE IF NOT EXISTS WikipediaAbstracts (
+    MovieID BIGINT PRIMARY KEY,
+    Abstract TEXT NOT NULL,
+    FOREIGN KEY(MovieID) REFERENCES Movies(MovieID)
+);
+
+
+CREATE TABLE IF NOT EXISTS Origins (
+    OriginID BIGINT PRIMARY KEY AUTO INCREMENT,
+    OriginName TEXT UNIQUE NOT NULL
+);
+
+
+CREATE TABLE IF NOT EXISTS Subjects (
+    SubjectID BIGINT PRIMARY KEY AUTO INCREMENT,
+    SubjectURI TEXT UNIQUE NOT NULL,
+    OriginID BIGINT NOT NULL,
+    FOREIGN KEY(OriginID) REFERENCES Origins(OriginID)
+);
+
+
+CREATE TABLE IF NOT EXISTS Relationships (
+    RelationshipID BIGINT PRIMARY KEY AUTO INCREMENT,
+    RelationshipURI TEXT UNIQUE NOT NULL
+);
+
+
+CREATE TABLE IF NOT EXISTS Objects (
+    ObjectID BIGINT PRIMARY KEY AUTO INCREMENT,
+    ObjectURI TEXT UNIQUE NOT NULL,
+    OriginID BIGINT NOT NULL,
+    FOREIGN KEY(OriginID) REFERENCES Origins(OriginID)
+);
+
+CREATE TABLE IF NOT EXISTS RDFs (
+    RDF_ID BIGINT PRIMARY KEY AUTO INCREMENT,
+    MovieID BIGINT NOT NULL,
+    SubjectID BIGINT NOT NULL,
+    RelationshipID BIGINT NOT NULL,
+    ObjectID BIGINT NOT NULL,
+    UNIQUE(SubjectID, RelationshipID, ObjectID),
+    FOREIGN KEY(MovieID) REFERENCES Movies(MovieID),
+    FOREIGN KEY(SubjectID) REFERENCES Subjects(SubjectID),
+    FOREIGN KEY(RelationshipID) REFERENCES Relationships(RelationshipID),
+    FOREIGN KEY(ObjectID) REFERENCES Objects(ObjectID)
+);
+
+CREATE INDEX IF NOT EXISTS idx_rdf_movie_id ON RDFs(MovieID);
+CREATE INDEX IF NOT EXISTS idx_rdf_subject_id ON RDFs(SubjectID);
+CREATE INDEX IF NOT EXISTS idx_rdf_relationship_id ON RDFs(RelationshipID);
+CREATE INDEX IF NOT EXISTS idx_rdf_object_id ON RDFs(ObjectID);
+