Client APIs
Instantiating DuckDB
DuckDB supports both in-memory and persistent databases.
To work with an in-memory datatabase, run:  
```swift
let database = try Database(store: .inMemory)
```  
To work with a persistent database, run:  
```swift
let database = try Database(store: .file(at: "test.db"))
```  
Queries can be issued through a database connection.  
```swift
let connection = try database.connect()
```  
DuckDB supports multiple connections per database.