Add initial database including simple abstractions

migrations/2020-09-27-201047_initial_schema/down.sql

@@ -0,0 +1,19 @@
+DROP TABLE persons;
+
+DROP TABLE instruments;
+
+DROP TABLE works;
+
+DROP TABLE instrumentations;
+
+DROP TABLE work_parts;
+
+DROP TABLE part_instrumentations;
+
+DROP TABLE work_sections;
+
+DROP TABLE ensembles;
+
+DROP TABLE recordings;
+
+DROP TABLE performances;

migrations/2020-09-27-201047_initial_schema/up.sql

@@ -0,0 +1,62 @@
+CREATE TABLE persons (
+    id BIGINT NOT NULL PRIMARY KEY,
+    first_name TEXT NOT NULL,
+    last_name TEXT NOT NULL
+);
+
+CREATE TABLE instruments (
+    id BIGINT NOT NULL PRIMARY KEY,
+    name TEXT NOT NULL
+);
+
+CREATE TABLE works (
+    id BIGINT NOT NULL PRIMARY KEY,
+    composer BIGINT NOT NULL REFERENCES persons(id) ON DELETE CASCADE,
+    title TEXT NOT NULL
+);
+
+CREATE TABLE instrumentations (
+    id BIGINT NOT NULL PRIMARY KEY,
+    work BIGINT NOT NULL REFERENCES works(id) ON DELETE CASCADE,
+    instrument BIGINT NOT NULL REFERENCES instruments(id)
+);
+
+CREATE TABLE work_parts (
+    id BIGINT NOT NULL PRIMARY KEY,
+    work BIGINT NOT NULL REFERENCES works(id) ON DELETE CASCADE,
+    part_index BIGINT NOT NULL,
+    composer BIGINT REFERENCES persons(id),
+    title TEXT NOT NULL
+);
+
+CREATE TABLE part_instrumentations (
+    id BIGINT NOT NULL PRIMARY KEY,
+    work_part BIGINT NOT NULL REFERENCES works(id) ON DELETE CASCADE,
+    instrument BIGINT NOT NULL REFERENCES instruments(id)
+);
+
+CREATE TABLE work_sections (
+    id BIGINT NOT NULL PRIMARY KEY,
+    work BIGINT NOT NULL REFERENCES works(id) ON DELETE CASCADE,
+    title TEXT NOT NULL,
+    before_index BIGINT NOT NULL
+);
+
+CREATE TABLE ensembles (
+    id BIGINT NOT NULL PRIMARY KEY,
+    name TEXT NOT NULL
+);
+
+CREATE TABLE recordings (
+    id BIGINT NOT NULL PRIMARY KEY,
+    work BIGINT NOT NULL REFERENCES works(id) ON DELETE CASCADE,
+    comment TEXT NOT NULL
+);
+
+CREATE TABLE performances (
+    id BIGINT NOT NULL PRIMARY KEY,
+    recording BIGINT NOT NULL REFERENCES recordings(id) ON DELETE CASCADE,
+    person BIGINT REFERENCES persons(id) ON DELETE CASCADE,
+    ensemble BIGINT REFERENCES ensembles(id) ON DELETE CASCADE,
+    role BIGINT REFERENCES instruments(id)
+);