Simple schema.

Differences-from-Datomic.md

@@ -48,4 +48,31 @@ await db.q(
       [?page :page/url ?url]
       [?page :page/visitedAt ?date]]`,
     {"limit": 2, "order-by": [["_max_date", "desc"]]});
+```
+
+## Simple schema
+
+Datomish's JS API exposes a simple schema interface through `db.ensureSchema`. This accepts input with simplified string keys and values, like this:
+
+```
+{
+  "name": "pages",
+  "attributes": [
+    {"name":         "page/url",
+     "type":         "string",
+     "cardinality":  "one",
+     "unique":       "identity",
+     "doc":          "A page's URL."},
+    {"name":         "page/title",
+     "type":         "string",
+     "cardinality":  "one",
+     "fulltext":     true,
+     "doc":          "A page's title."},
+    {"name":         "page/content",
+     "type":         "string",
+     "cardinality":  "one",
+     "fulltext":     true,
+     "doc":          "A snapshot of the page's content. Should be plain text."},
+  ]
+}
 ```