Page source:

// Get a reference to a named database. This command either creates a new one or accesses an existing one.
var db = Wub_GetDB("magicCardTrick");

// Get a reference to a collection (like a table).
var coll = Wub_GetCollection(db, "fixedCard");

// Create a DB Object (row) to insert into the collection.
// var dbobj = Wub_NewDBObject([. suit=suit, number=number .]); 
// Wub_InsertDB(coll, dbobj);

// To query the database, create a query object and call the QueryDB function:
var dbobj = Wub_NewDBObject([. .]); 
var res = Wub_QueryDB(coll, dbobj, 1); // 20 = max results

// Delete database
Wub_DropDB("magicCardTrick");

if Size(res) == 1 then
   res[0]
else
   nil
end;