diff --git a/p/db/index.js b/p/db/index.js
new file mode 100644
index 00000000..7c897f20
--- /dev/null
+++ b/p/db/index.js
@@ -0,0 +1,109 @@
+'use strict'
+
+const crypto = require('crypto')
+
+const _formatStation = require('../../format/station')
+const _parseLine = require('../../parse/line')
+const {accessibility, bike} = require('../../format/filters')
+
+const modes = require('./modes')
+const formatLoyaltyCard = require('./loyalty-cards').format
+
+const transformReqBody = (body) => {
+	body.client = {id: 'DB', v: '16040000', type: 'IPH', name: 'DB Navigator'}
+	body.ext = 'DB.R15.12.a'
+	body.ver = '1.15'
+	body.auth = {type: 'AID', aid: 'n91dB8Z77MLdoR0K'}
+
+	return body
+}
+
+const salt = 'bdI8UVj40K5fvxwf'
+const transformReq = (req) => {
+	const hash = crypto.createHash('md5')
+	hash.update(req.body + salt)
+
+	if (!req.query) req.query = {}
+	req.query.checksum = hash.digest('hex')
+
+	return req
+}
+
+const transformJourneysQuery = (query, opt) => {
+	const filters = query.jnyFltrL
+	if (opt.accessibility && accessibility[opt.accessibility]) {
+		filters.push(accessibility[opt.accessibility])
+	}
+	if (opt.bike) filters.push(bike)
+
+	query.trfReq = {
+		jnyCl: 2, // todo
+		tvlrProf: [{
+			type: 'E',
+			redtnCard: opt.loyaltyCard
+				? formatLoyaltyCard(opt.loyaltyCard)
+				: null
+		}],
+		cType: 'PK'
+	}
+
+	return query
+}
+
+const parseLine = (profile, l) => {
+	const res = _parseLine(profile, l)
+
+	res.mode = res.product = null
+	if ('class' in res) {
+		const data = modes.bitmasks[parseInt(res.class)]
+		if (data) {
+			res.mode = data.mode
+			res.product = data.product
+		}
+	}
+
+	return res
+}
+
+const isIBNR = /^\d{6,}$/
+const formatStation = (id) => {
+	if (!isIBNR.test(id)) throw new Error('station ID must be an IBNR.')
+	return _formatStation(id)
+}
+
+const defaultProducts = {
+	suburban: true,
+	subway: true,
+	tram: true,
+	bus: true,
+	ferry: true,
+	national: true,
+	nationalExp: true,
+	regional: true,
+	regionalExp: true
+}
+
+// todo: find option for absolute number of results
+
+const dbProfile = {
+	timezone: 'Europe/Berlin',
+	endpoint: 'https://reiseauskunft.bahn.de/bin/mgate.exe',
+	transformReqBody,
+	transformReq,
+	transformJourneysQuery,
+
+	// todo: parseLocation
+	parseLine,
+
+	formatStation,
+	formatProducts: (products) => {
+		products = Object.assign(Object.create(null), defaultProducts, products)
+		return {
+			type: 'PROD',
+			mode: 'INC',
+			value: modes.stringifyBitmask(products) + ''
+		}
+	}
+}
+
+module.exports = dbProfile
diff --git a/p/db/loyalty-cards.js b/p/db/loyalty-cards.js
new file mode 100644
index 00000000..dfb583e9
--- /dev/null
+++ b/p/db/loyalty-cards.js
@@ -0,0 +1,30 @@
+'use strict'
+
+const c = {
+	NONE: Symbol('no loyaly card'),
+	BAHNCARD: Symbol('Bahncard'),
+	VORTEILSCARD: Symbol('VorteilsCard'),
+	HALBTAXABO: Symbol('HalbtaxAbo'),
+	VOORDEELURENABO: Symbol('Voordeelurenabo'),
+	SHCARD: Symbol('SH-Card'),
+	GENERALABONNEMENT: Symbol('General-Abonnement')
+}
+
+// see https://gist.github.com/juliuste/202bb04f450a79f8fa12a2ec3abcd72d
+const formatLoyaltyCard = (data) => {
+	if (data.type === c.BAHNCARD) {
+		if (data.discount === 25) return c.class === 1 ? 1 : 2
+		if (data.discount === 50) return c.class === 1 ? 3 : 4
+	}
+	if (data.type === c.VORTEILSCARD) return 9
+	if (data.type === c.HALBTAXABO) return data.railplus ? 10 : 11
+	if (data.type === c.VOORDEELURENABO) return data.railplus ? 12 : 13
+	if (data.type === c.SHCARD) return 14
+	if (data.type === c.GENERALABONNEMENT) return 15
+	return 0
+}
+
+module.exports = {
+	data: c,
+	format: formatLoyaltyCard
+}
diff --git a/p/db/modes.js b/p/db/modes.js
new file mode 100644
index 00000000..3b0a6a94
--- /dev/null
+++ b/p/db/modes.js
@@ -0,0 +1,113 @@
+'use strict'
+
+const m = {
+	nationalExp: {
+		bitmask: 1,
+		name: 'InterCityExpress',
+		short: 'ICE',
+		mode: 'train',
+		product: 'nationalExp'
+	},
+	national: {
+		bitmask: 2,
+		name: 'InterCity & EuroCity',
+		short: 'IC/EC',
+		mode: 'train',
+		product: 'national'
+	},
+	regionalExp: {
+		bitmask: 4,
+		name: 'InterRegio',
+		short: 'IR',
+		mode: 'train',
+		product: 'regionalExp'
+	},
+	regional: {
+		bitmask: 8,
+		name: 'RegionalExpress & Regio',
+		short: 'RE/RB',
+		mode: 'train',
+		product: 'regional'
+	},
+	suburban: {
+		bitmask: 16,
+		name: 'S-Bahn',
+		short: 'S',
+		mode: 'train',
+		product: 'suburban'
+	},
+	bus: {
+		bitmask: 32,
+		name: 'Bus',
+		short: 'B',
+		mode: 'bus',
+		product: 'bus'
+	},
+	ferry: {
+		bitmask: 64,
+		name: 'Ferry',
+		short: 'F',
+		mode: 'ferry',
+		product: 'ferry'
+	},
+	subway: {
+		bitmask: 128,
+		name: 'U-Bahn',
+		short: 'U',
+		mode: 'train',
+		product: 'subway'
+	},
+	tram: {
+		bitmask: 256,
+		name: 'Tram',
+		short: 'T',
+		mode: 'tram',
+		product: 'tram'
+	},
+	taxi: {
+		bitmask: 512,
+		name: 'Group Taxi',
+		short: 'Taxi',
+		mode: null, // todo
+		product: 'taxi'
+	},
+	unknown: {
+		bitmask: 0,
+		name: 'unknown',
+		short: '?',
+		product: 'unknown'
+	}
+}
+
+m.bitmasks = []
+m.bitmasks[1] = m.nationalExp
+m.bitmasks[2] = m.national
+m.bitmasks[4] = m.regionalExp
+m.bitmasks[8] = m.regional
+m.bitmasks[16] = m.suburban
+m.bitmasks[32] = m.bus
+m.bitmasks[64] = m.ferry
+m.bitmasks[128] = m.subway
+m.bitmasks[256] = m.tram
+m.bitmasks[512] = m.taxi
+
+// todo: move up
+m.stringifyBitmask = (products) => {
+	let bitmask = 0
+	for (let product in products) {
+		if (products[product] === true) bitmask += m[product].bitmask
+	}
+	return bitmask
+}
+
+// todo: move up
+m.parseBitmask = (bitmask) => {
+	let products = {}, i = 1
+	do {
+		products[m.bitmasks[i].product] = !!(bitmask & i)
+		i *= 2
+	} while (m.bitmasks[i] && m.bitmasks[i].product)
+	return products
+}
+
+module.exports = m
diff --git a/package.json b/package.json
index 7ff792c0..a896a12a 100644
--- a/package.json
+++ b/package.json
@@ -7,7 +7,8 @@
 		"index.js",
 		"lib",
 		"parse",
-		"format"
+		"format",
+		"p"
 	],
 	"author": "Jannis R <mail@jannisr.de>",
 	"homepage": "https://github.com/derhuerst/hafas-client",
diff --git a/test/db.js b/test/db.js
index 9841817d..0bb8fcf7 100644
--- a/test/db.js
+++ b/test/db.js
@@ -5,6 +5,7 @@ const tape = require('tape')
 const isRoughlyEqual = require('is-roughly-equal')
 
 const createClient = require('..')
+const dbProfile = require('../p/db')
 const {
 	findStation,
 	assertValidStation,