first MVP

prisma/migrations/20251114190833_init/migration.sql

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+-- CreateTable
+CREATE TABLE "Person" (
+    "id" TEXT NOT NULL,
+    "name" TEXT NOT NULL,
+    "company" TEXT,
+    "role" TEXT,
+    "email" TEXT,
+    "location" TEXT,
+    "sectors" TEXT[] DEFAULT ARRAY[]::TEXT[],
+    "interests" TEXT[] DEFAULT ARRAY[]::TEXT[],
+    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updatedAt" TIMESTAMP(3) NOT NULL,
+
+    CONSTRAINT "Person_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateTable
+CREATE TABLE "Connection" (
+    "id" TEXT NOT NULL,
+    "personAId" TEXT NOT NULL,
+    "personBId" TEXT NOT NULL,
+    "introducedByChain" TEXT[] DEFAULT ARRAY[]::TEXT[],
+    "eventLabels" TEXT[] DEFAULT ARRAY[]::TEXT[],
+    "notes" TEXT,
+    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+
+    CONSTRAINT "Connection_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateIndex
+CREATE INDEX "Person_name_idx" ON "Person"("name");
+
+-- CreateIndex
+CREATE INDEX "Connection_personAId_idx" ON "Connection"("personAId");
+
+-- CreateIndex
+CREATE INDEX "Connection_personBId_idx" ON "Connection"("personBId");
+
+-- AddForeignKey
+ALTER TABLE "Connection" ADD CONSTRAINT "Connection_personAId_fkey" FOREIGN KEY ("personAId") REFERENCES "Person"("id") ON DELETE CASCADE ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE "Connection" ADD CONSTRAINT "Connection_personBId_fkey" FOREIGN KEY ("personBId") REFERENCES "Person"("id") ON DELETE CASCADE ON UPDATE CASCADE;

prisma/migrations/20251114191515_connection_pair_constraints/migration.sql

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+-- Enforce undirected connection uniqueness and prevent self-edges
+
+-- Prevent self-edge (A == B)
+ALTER TABLE "Connection"
+  ADD CONSTRAINT "Connection_no_self_edge"
+  CHECK ("personAId" <> "personBId");
+
+-- Unique undirected pair using functional index on LEAST/GREATEST
+-- Ensures only one edge exists for a given unordered pair {A,B}
+CREATE UNIQUE INDEX IF NOT EXISTS "Connection_undirected_pair_unique"
+ON "Connection" (
+  (LEAST("personAId","personBId")),
+  (GREATEST("personAId","personBId"))
+);

prisma/migrations/migration_lock.toml

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+# Please do not edit this file manually
+# It should be added in your version-control system (e.g., Git)
+provider = "postgresql"