add sqlite connection string docs

docs/core/connectors/sqlite.md

@@ -1,3 +1,65 @@
 # SQLite
 
-Coming soon.
+The SQLite data source connector connects Prisma to a [SQLite](https://www.sqlite.org/) database file. These files always have the file ending `.db` (e.g.: `dev.db`).
+
+## Example
+
+To connect to a SQLite database file, you need to configure a [`datasource`](../../prisma-schema-file.md#data-sources) block in your [schema file](../../prisma-schema-file.md):
+
+```prisma
+datasource sqlite {
+  provider = "sqlite"
+  url      = "./dev.db"
+}
+
+// ... the file should also contain a data model definition and (optionally) generators
+```
+
+The fields passed to the `datasource` block are:
+
+- `provider`: Specifies the `sqlite` data source connector.
+- `url`: Specifies the [connection string](#connection-string) for the SQLite database file. In this case, the file is located in the same directory and called `dev.db`.
+
+Find more information on the `datasource` fields [here](../../prisma-schema-file.md#data-sources).
+
+## Data model mapping
+
+The SQLite connector maps the [scalar types](../../data-modeling.md#scalar-types) from the [data model](../../data-modeling.md) to native column types as follows:
+
+| Data model  | SQLite  |
+| -------- | --------- | 
+| `String`   | `TEXT`      | 
+| `Boolean`  | `BOOLEAN`   |
+| `Int`      | `INTEGER`   |
+| `Float`    | `REAL`      |
+
+## Connection details
+
+### Connection string
+
+The connection URL of a SQLite connector points to a file on your file system. For example, the following two paths are equivalent because the `.db` iss in the same directory:
+
+```prisma
+datasource sqlite {
+  provider = "sqlite"
+  url      = "./dev.db"
+}
+```
+
+is the same as:
+
+```prisma
+datasource sqlite {
+  provider = "sqlite"
+  url      = "dev.db"
+}
+```
+
+You can also target files from the root or any other place in your file system:
+
+```prisma
+datasource sqlite {
+  provider = "sqlite"
+  url      = "/Users/janedoe/dev.db"
+}
+```