diff --git a/packages/core/package.json b/packages/core/package.json
index 9831726..b8a8d8a 100644
--- a/packages/core/package.json
+++ b/packages/core/package.json
@@ -27,11 +27,9 @@
   },
   "name": "@morten-olsen/fluxcurrent-core",
   "version": "1.0.0",
-  "imports": {
-    "#root/*": "./src/*"
-  },
   "dependencies": {
     "knex": "^3.1.0",
+    "knex-pglite": "^0.12.0",
     "pg": "^8.16.3",
     "zod": "^4.1.5"
   }
diff --git a/packages/core/src/database/database.ts b/packages/core/src/database/database.ts
deleted file mode 100644
index e69de29..0000000
diff --git a/packages/core/src/database/migrations/migrations.001-init.ts b/packages/core/src/database/migrations/migrations.001-init.ts
deleted file mode 100644
index e69de29..0000000
diff --git a/packages/core/src/database/migrations/migrations.ts b/packages/core/src/database/migrations/migrations.ts
deleted file mode 100644
index e69de29..0000000
diff --git a/packages/core/src/services/database/database.ts b/packages/core/src/services/database/database.ts
new file mode 100644
index 0000000..7e64426
--- /dev/null
+++ b/packages/core/src/services/database/database.ts
@@ -0,0 +1,31 @@
+import knex, { type Knex } from 'knex';
+import ClientPgLite from 'knex-pglite';
+
+import { createMigrationSource } from './migrations/migrations.ts';
+
+class DatabaseService {
+  #dbPromise?: Promise<Knex>;
+
+  #setup = async () => {
+    const db = knex({
+      client: ClientPgLite,
+      dialect: 'postgres',
+      connection: {},
+      migrations: {
+        migrationSource: createMigrationSource({}),
+      },
+    });
+    await db.migrate.latest();
+    return db;
+  };
+
+  public getDb = async () => {
+    if (!this.#dbPromise) {
+      this.#dbPromise = this.#setup();
+    }
+    return this.#dbPromise;
+  };
+}
+
+export { tableNames, type TableRow } from './migrations/migrations.ts';
+export { DatabaseService };
diff --git a/packages/core/src/services/database/migrations/migrations.001-init.ts b/packages/core/src/services/database/migrations/migrations.001-init.ts
new file mode 100644
index 0000000..9ce2f18
--- /dev/null
+++ b/packages/core/src/services/database/migrations/migrations.001-init.ts
@@ -0,0 +1,95 @@
+import type { Migration } from './migrations.types.ts';
+
+type MetaFieldType = string | number | boolean;
+
+const tableNames = {
+  typeSchemas: 'typeSchemas',
+  documents: 'documents',
+};
+
+const init: Migration = {
+  name: 'init',
+  up: async ({ knex }) => {
+    await knex.schema.createTable(tableNames.typeSchemas, (table) => {
+      table.string('name');
+      table.string('version');
+      table.jsonb('schema');
+      table.datetime('createdAt').notNullable();
+      table.datetime('updatedAt').notNullable();
+      table.datetime('deletedAt').nullable();
+    });
+
+    await knex.schema.createTable(tableNames.documents, (table) => {
+      table.string('uri').notNullable();
+      table.string('type').notNullable();
+      table.string('typeVersion').nullable();
+      table.datetime('createdAt').notNullable();
+      table.datetime('updatedAt').notNullable();
+      table.datetime('deletedAt').nullable();
+      table.jsonb('metadata').notNullable();
+      table.jsonb('data').notNullable();
+
+      // Primary key and unique constraints
+      table.primary(['uri', 'type']);
+      table.index(['uri']);
+      table.index(['type']);
+      table.index(['createdAt']);
+      table.index(['updatedAt']);
+      table.index(['deletedAt']);
+    });
+
+    // Add indexes for typeSchemas table
+    await knex.schema.alterTable(tableNames.typeSchemas, (table) => {
+      table.primary(['name', 'version']);
+      table.index(['name']);
+      table.index(['createdAt']);
+      table.index(['updatedAt']);
+    });
+
+    // Add GIN index for JSONB metadata column for efficient meta search
+    await knex.raw('CREATE INDEX documents_metadata_gin_idx ON documents USING GIN (metadata);');
+
+    // Add partial indexes for active (non-deleted) documents - most common query pattern
+    await knex.raw('CREATE INDEX documents_active_uri_idx ON documents (uri) WHERE "deletedAt" IS NULL;');
+    await knex.raw('CREATE INDEX documents_active_type_idx ON documents (type) WHERE "deletedAt" IS NULL;');
+
+    // Add partial index for active schemas
+    await knex.raw('CREATE INDEX type_schemas_active_name_idx ON "typeSchemas" (name) WHERE "deletedAt" IS NULL;');
+  },
+  down: async ({ knex }) => {
+    await knex.raw('DROP INDEX IF EXISTS documents_metadata_gin_idx;');
+    await knex.raw('DROP INDEX IF EXISTS documents_active_uri_idx;');
+    await knex.raw('DROP INDEX IF EXISTS documents_active_type_idx;');
+    await knex.raw('DROP INDEX IF EXISTS type_schemas_active_name_idx;');
+    await knex.schema.dropTableIfExists(tableNames.documents);
+    await knex.schema.dropTableIfExists(tableNames.typeSchemas);
+  },
+};
+
+type TypeSchemaRow = {
+  name: string;
+  version: string;
+  schema: Record<string, unknown>;
+  createdAt: string;
+  updatedAt: string;
+  deletedAt: string | null;
+};
+
+type DocumentRow = {
+  uri: string;
+  type: string;
+  typeVersion: string | null;
+  createdAt: string;
+  updatedAt: string;
+  deletedAt: string | null;
+  metadata: Record<string, MetaFieldType>;
+  data: Record<string, unknown>;
+};
+
+type TableRow = {
+  typeSchema: TypeSchemaRow;
+  document: DocumentRow;
+};
+
+export type { TableRow };
+export { init, tableNames };
diff --git a/packages/core/src/services/database/migrations/migrations.ts b/packages/core/src/services/database/migrations/migrations.ts
new file mode 100644
index 0000000..97317fa
--- /dev/null
+++ b/packages/core/src/services/database/migrations/migrations.ts
@@ -0,0 +1,20 @@
+import type { Knex } from 'knex';
+
+import { init } from './migrations.001-init.ts';
+import type { Migration, MigrationInput } from './migrations.types.ts';
+
+const migrations: Migration[] = [init];
+
+const createMigrationSource = (options: Omit<MigrationInput, 'knex'>): Knex.MigrationSource<Migration> => {
+  return {
+    getMigrations: async () => migrations,
+    getMigrationName: (migration) => migration.name,
+    getMigration: async (migration) => ({
+      up: async (knex) => migration.up({ ...options, knex }),
+      down: async (knex) => migration.down({ ...options, knex }),
+    }),
+  };
+};
+
+export { tableNames, type TableRow } from './migrations.001-init.ts';
+export { createMigrationSource };
diff --git a/packages/core/src/services/database/migrations/migrations.types.ts b/packages/core/src/services/database/migrations/migrations.types.ts
new file mode 100644
index 0000000..8ef1851
--- /dev/null
+++ b/packages/core/src/services/database/migrations/migrations.types.ts
@@ -0,0 +1,13 @@
+import type { Knex } from 'knex';
+
+type MigrationInput = {
+  knex: Knex;
+};
+
+type Migration = {
+  readonly name: string;
+  up: (input: MigrationInput) => Promise<void>;
+  down: (input: MigrationInput) => Promise<void>;
+};
+
+export type { Migration, MigrationInput };
diff --git a/packages/core/src/services/documents/documents.schemas.ts b/packages/core/src/services/documents/documents.schemas.ts
index d4c7b6b..d68408e 100644
--- a/packages/core/src/services/documents/documents.schemas.ts
+++ b/packages/core/src/services/documents/documents.schemas.ts
@@ -4,13 +4,10 @@ const metaValueSchema = z.union([z.string(), z.number(), z.boolean()]);
 
 const documentSchema = z.object({
   uri: z.string(),
-  created: z.iso.datetime(),
-  updated: z.iso.datetime(),
-  deleted: z.iso.datetime().nullish(),
+  createdAt: z.iso.datetime(),
+  updatedAt: z.iso.datetime(),
+  deletedAt: z.iso.datetime().nullish(),
   type: z.string(),
-  title: z.string().nullish(),
-  description: z.string().nullish(),
-  tags: z.array(z.string()),
   metadata: z.record(z.string(), metaValueSchema),
   data: z.record(z.string(), z.unknown()),
 });
@@ -18,25 +15,13 @@ const documentSchema = z.object({
 type Document = z.infer<typeof Document>;
 
 const documentUpsertSchema = documentSchema.omit({
-  created: true,
-  updated: true,
-  deleted: true,
+  createdAt: true,
+  updatedAt: true,
+  deletedAt: true,
 });
 
 type DocumentUpsert = z.infer<typeof documentUpsertSchema>;
 
-const metaDateFilterSchema = z.object({
-  type: z.literal('date'),
-  field: z.string(),
-  filter: z.object({
-    gt: z.iso.datetime().optional(),
-    gte: z.iso.datetime().optional(),
-    lt: z.iso.datetime().optional(),
-    lte: z.iso.datetime().optional(),
-    nill: z.boolean().optional(),
-  }),
-});
-
 const metaNumberFilterSchema = z.object({
   type: z.literal('number'),
   field: z.string(),
@@ -72,22 +57,37 @@ const metaBoolFilterSchema = z.object({
   }),
 });
 
-const metaFilterSchema = z.union([
-  metaDateFilterSchema,
-  metaNumberFilterSchema,
-  metaTextFilterSchema,
-  metaBoolFilterSchema,
-]);
+const metaFilterSchema = z.union([metaNumberFilterSchema, metaTextFilterSchema, metaBoolFilterSchema]);
 
 type MetaFilter = z.infer<typeof metaFilterSchema>;
 
+const metaConditionSchema = z.union([
+  z.object({
+    type: z.literal('and'),
+    get conditions() {
+      return z.array(metaConditionSchema);
+    },
+  }),
+  z.object({
+    type: z.literal('or'),
+    get conditions() {
+      return z.array(metaConditionSchema);
+    },
+  }),
+  metaFilterSchema,
+]);
+
+type MetaCondition = z.infer<typeof metaConditionSchema>;
+
 const documentSearchOptionsSchema = z.object({
   uris: z.array(z.string()).optional(),
   types: z.array(z.string()).optional(),
-  meta: z.array(metaFilterSchema).optional(),
+  meta: metaConditionSchema.optional(),
+  limit: z.number().optional(),
+  offset: z.number().optional(),
 });
 
 type DocumentSearchOptions = z.infer<typeof documentSearchOptionsSchema>;
 
-export type { Document, DocumentUpsert, MetaFilter, DocumentSearchOptions };
-export { documentSchema, documentUpsertSchema, metaFilterSchema, documentSearchOptionsSchema };
+export type { Document, DocumentUpsert, MetaFilter, MetaCondition, DocumentSearchOptions };
+export { documentSchema, documentUpsertSchema, metaFilterSchema, metaConditionSchema, documentSearchOptionsSchema };
diff --git a/packages/core/src/services/documents/documents.test.ts b/packages/core/src/services/documents/documents.test.ts
new file mode 100644
index 0000000..54e7953
--- /dev/null
+++ b/packages/core/src/services/documents/documents.test.ts
@@ -0,0 +1,28 @@
+import { describe, it, expect, beforeEach } from 'vitest';
+
+import { DocumentsService } from './documents.ts';
+
+import { Services } from '#root/utils/services.ts';
+
+describe('DocumentsService', () => {
+  let services: Services;
+  let documentsService: DocumentsService;
+  beforeEach(() => {
+    services = new Services();
+    documentsService = services.get(DocumentsService);
+  });
+
+  it('should upsert a document', async () => {
+    const document = {
+      uri: 'test',
+      type: 'test',
+      metadata: {
+        test: 'test',
+      },
+      data: {
+        test: 'test',
+      },
+    };
+    await documentsService.upsert(document);
+  });
+});
diff --git a/packages/core/src/services/documents/documents.ts b/packages/core/src/services/documents/documents.ts
index e69de29..8ea2f20 100644
--- a/packages/core/src/services/documents/documents.ts
+++ b/packages/core/src/services/documents/documents.ts
@@ -0,0 +1,170 @@
+import type { Knex } from 'knex';
+
+import { DatabaseService, tableNames, type TableRow } from '../database/database.ts';
+
+import type { DocumentSearchOptions, DocumentUpsert, MetaCondition, MetaFilter } from './documents.schemas.ts';
+
+import type { Services } from '#root/utils/services.ts';
+
+class DocumentsService {
+  #services: Services;
+
+  constructor(services: Services) {
+    this.#services = services;
+  }
+
+  public upsert = async (document: DocumentUpsert) => {
+    const db = await this.#services.get(DatabaseService).getDb();
+    const baseItem = {
+      ...document,
+      updatedAt: new Date(),
+      deletedAt: null,
+    };
+    await db('documents')
+      .insert({ ...baseItem, createdAt: new Date() })
+      .onConflict(['uri', 'type'])
+      .merge({
+        ...baseItem,
+      });
+  };
+
+  public search = async (options: DocumentSearchOptions) => {
+    const { uris, types, meta, limit, offset } = options;
+    const db = await this.#services.get(DatabaseService).getDb();
+    let query = db<TableRow['document']>(tableNames.documents);
+    if (uris) {
+      query = query.whereIn('uri', uris);
+    }
+    if (types) {
+      query = query.whereIn('type', types);
+    }
+    if (limit) {
+      query = query.limit(limit);
+    }
+    if (meta) {
+      query = query.where((builder) => {
+        this.buildMetaCondition(builder, meta);
+      });
+    }
+    if (offset) {
+      query = query.offset(offset);
+    }
+    return query;
+  };
+
+  /**
+   * Recursively builds meta search conditions with proper scoping
+   */
+  private buildMetaCondition(builder: Knex.QueryBuilder, condition: MetaCondition): void {
+    if (condition.type === 'and') {
+      // Handle AND conditions - all must be true
+      for (const [index, subCondition] of condition.conditions.entries()) {
+        if (index === 0) {
+          // First condition doesn't need andWhere
+          builder.where((subBuilder) => {
+            this.buildMetaCondition(subBuilder, subCondition);
+          });
+        } else {
+          builder.andWhere((subBuilder) => {
+            this.buildMetaCondition(subBuilder, subCondition);
+          });
+        }
+      }
+    } else if (condition.type === 'or') {
+      // Handle OR conditions - at least one must be true
+      for (const [index, subCondition] of condition.conditions.entries()) {
+        if (index === 0) {
+          // First condition doesn't need orWhere
+          builder.where((subBuilder) => {
+            this.buildMetaCondition(subBuilder, subCondition);
+          });
+        } else {
+          builder.orWhere((subBuilder) => {
+            this.buildMetaCondition(subBuilder, subCondition);
+          });
+        }
+      }
+    } else {
+      // Handle individual filter conditions
+      this.buildMetaFilter(builder, condition);
+    }
+  }
+
+  /**
+   * Builds individual meta filter conditions using JSONB operators
+   */
+  private buildMetaFilter(builder: Knex.QueryBuilder, filter: MetaFilter): void {
+    const fieldPath = `metadata->'${filter.field}'`;
+
+    if (filter.type === 'number') {
+      const { gt, gte, lt, lte, eq, neq, nill } = filter.filter;
+
+      if (nill !== undefined) {
+        if (nill) {
+          builder.whereNull(`metadata->'${filter.field}'`);
+        } else {
+          builder.whereNotNull(`metadata->'${filter.field}'`);
+        }
+        return;
+      }
+
+      if (eq !== undefined) {
+        builder.where(builder.client.raw(`(${fieldPath})::numeric`), eq);
+      }
+      if (neq !== undefined) {
+        builder.where(builder.client.raw(`(${fieldPath})::numeric`), '!=', neq);
+      }
+      if (gt !== undefined) {
+        builder.where(builder.client.raw(`(${fieldPath})::numeric`), '>', gt);
+      }
+      if (gte !== undefined) {
+        builder.where(builder.client.raw(`(${fieldPath})::numeric`), '>=', gte);
+      }
+      if (lt !== undefined) {
+        builder.where(builder.client.raw(`(${fieldPath})::numeric`), '<', lt);
+      }
+      if (lte !== undefined) {
+        builder.where(builder.client.raw(`(${fieldPath})::numeric`), '<=', lte);
+      }
+    } else if (filter.type === 'text') {
+      const { eq, neq, like, nlike, nill } = filter.filter;
+
+      if (nill !== undefined) {
+        if (nill) {
+          builder.whereNull(`metadata->'${filter.field}'`);
+        } else {
+          builder.whereNotNull(`metadata->'${filter.field}'`);
+        }
+        return;
+      }
+
+      if (eq !== undefined) {
+        builder.where(builder.client.raw(`metadata->>'${filter.field}'`), eq);
+      }
+      if (neq !== undefined) {
+        builder.where(builder.client.raw(`metadata->>'${filter.field}'`), '!=', neq);
+      }
+      if (like !== undefined) {
+        builder.where(builder.client.raw(`metadata->>'${filter.field}'`), 'like', like);
+      }
+      if (nlike !== undefined) {
+        builder.where(builder.client.raw(`metadata->>'${filter.field}'`), 'not like', nlike);
+      }
+    } else if (filter.type === 'bool') {
+      const { eq, nill } = filter.filter;
+
+      if (nill !== undefined) {
+        if (nill) {
+          builder.whereNull(`metadata->'${filter.field}'`);
+        } else {
+          builder.whereNotNull(`metadata->'${filter.field}'`);
+        }
+        return;
+      }
+
+      builder.where(builder.client.raw(`(${fieldPath})::boolean`), eq);
+    }
+  }
+}
+
+export { DocumentsService };
diff --git a/packages/core/src/utils/services.ts b/packages/core/src/utils/services.ts
index e69de29..205e3b2 100644
--- a/packages/core/src/utils/services.ts
+++ b/packages/core/src/utils/services.ts
@@ -0,0 +1,14 @@
+type ServiceDepencency<T> = new (services: Services) => T;
+class Services {
+  #instances: Map<ServiceDepencency<unknown>, unknown> = new Map<ServiceDepencency<unknown>, unknown>();
+
+  public get<T>(service: ServiceDepencency<T>) {
+    if (!this.#instances.has(service)) {
+      this.#instances.set(service, new service(this));
+    }
+
+    return this.#instances.get(service) as T;
+  }
+}
+
+export { Services };
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index e38b4f0..04d162c 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -55,6 +55,9 @@ importers:
       knex:
         specifier: ^3.1.0
         version: 3.1.0(pg@8.16.3)
+      knex-pglite:
+        specifier: ^0.12.0
+        version: 0.12.0(@electric-sql/pglite@0.3.8)(knex@3.1.0(pg@8.16.3))
       pg:
         specifier: ^8.16.3
         version: 8.16.3
@@ -134,6 +137,9 @@ packages:
     resolution: {integrity: sha512-6zABk/ECA/QYSCQ1NGiVwwbQerUCZ+TQbp64Q3AgmfNvurHH0j8TtXa1qbShXA6qqkpAj4V5W8pP6mLe1mcMqA==}
     engines: {node: '>=18'}
 
+  '@electric-sql/pglite@0.3.8':
+    resolution: {integrity: sha512-VlAz/R7mktifp9IHzNvjxWJM8p3fPH2lHpustYuRSOXOpXiAMTlA5qqxcufPaDnfee6CZCE9qrT1MHDT7riSHg==}
+
   '@esbuild/aix-ppc64@0.25.9':
     resolution: {integrity: sha512-OaGtL73Jck6pBKjNIe24BnFE6agGl+6KxDtTfHhy1HmhthfKouEcOhqpSL64K4/0WCtbKFLOdzD/44cJ4k9opA==}
     engines: {node: '>=18'}
@@ -1593,6 +1599,12 @@ packages:
   keyv@4.5.4:
     resolution: {integrity: sha512-oxVHkHR/EJf2CNXnWxRLW6mg7JyCCUcG0DtEGmL2ctUo1PNTin1PUil+r/+4r5MpVgC/fn1kjsx7mjSujKqIpw==}
 
+  knex-pglite@0.12.0:
+    resolution: {integrity: sha512-EsTpIJ8D1SaFm5sVNqKf+Q57bnPGVEpVWwZXXxGrzDyIwtHOwAnd59dY8izkR/nJt8OFrLHMudqaPKfXajOHsA==}
+    peerDependencies:
+      '@electric-sql/pglite': 0.x
+      knex: 3.x
+
   knex@3.1.0:
     resolution: {integrity: sha512-GLoII6hR0c4ti243gMs5/1Rb3B+AjwMOfjYm97pu0FOQa7JH56hgBxYf5WK2525ceSbBY1cjeZ9yk99GPMB6Kw==}
     engines: {node: '>=16'}
@@ -2501,6 +2513,8 @@ snapshots:
 
   '@bcoe/v8-coverage@1.0.2': {}
 
+  '@electric-sql/pglite@0.3.8': {}
+
   '@esbuild/aix-ppc64@0.25.9':
     optional: true
 
@@ -4095,6 +4109,11 @@ snapshots:
     dependencies:
       json-buffer: 3.0.1
 
+  knex-pglite@0.12.0(@electric-sql/pglite@0.3.8)(knex@3.1.0(pg@8.16.3)):
+    dependencies:
+      '@electric-sql/pglite': 0.3.8
+      knex: 3.1.0(pg@8.16.3)
+
   knex@3.1.0(pg@8.16.3):
     dependencies:
       colorette: 2.0.19