[mod] readme

readme.md

@@ -1,8 +1,6 @@
-# Sindri
+# sindri
 
-## Zweck
+erstellt Datenmodell-Skripte in verschiedenen Ausgabe-Sprachen (MySQL, SQLite, …) auf Basis einer abstrakten Beschreibung
-
-- Erstellung von Datenmodell-Skripten in verschiedenen Ausgabeformaten (MySQL, SQLite, …) auf Basis einer abstrakten Beschreibung
 
 
 ## Erstellung
@@ -25,6 +23,7 @@ Beispiel-Nutzung:
 ```sh
 tools/build
 cd build
+
 cat ../doc/examples/contacts.sindri.json | ./sindri -f database:sqlite
 ```
 
@@ -51,3 +50,45 @@ CREATE TABLE
 ;
 ```
 
+Der Befehl muss nur minimal gewändert werden um die PostgreSQL-Ausgabe zu erhalten:
+
+```sh
+cat ../doc/examples/contacts.sindri.json | ./sindri -f database:postgresql
+```
+
+… erzeugt:
+
+```sql
+CREATE TABLE
+	address(
+		"id" SERIAL,
+		"city" VARCHAR(255) NOT NULL,
+		"zip" VARCHAR(255) NOT NULL,
+		"street" VARCHAR(255) NOT NULL,
+		UNIQUE ("id")
+	)
+;
+COMMENT ON TABLE address IS 'collection of addresses';
+COMMENT ON COLUMN address.city IS 'the name of the city';
+COMMENT ON COLUMN address.zip IS 'the postal code';
+COMMENT ON COLUMN address.street IS 'the name of the street and the house number';
+
+CREATE TABLE
+	person(
+		"id" SERIAL,
+		"prename" VARCHAR(255) NOT NULL,
+		"surname" VARCHAR(255) NOT NULL,
+		"address_id" INTEGER NOT NULL,
+		"email_address" VARCHAR(255) DEFAULT NULL,
+		UNIQUE ("id")
+	)
+;
+COMMENT ON TABLE person IS 'collection of contacts';
+COMMENT ON COLUMN person.prename IS 'first name of the person';
+COMMENT ON COLUMN person.surname IS 'last name of the person';
+COMMENT ON COLUMN person.address_id IS 'reference to the associated address dataset';
+COMMENT ON COLUMN person.email_address IS 'optional eMail address';
+```
+
+
+