Connection

To enable the connection to the database, set "enable":true and fill the other fields.
Only one engine can be selected at the same time.

{
  "enable":    false,
  "user":      "",
  "password":  "",
  "database":  "",
  "server":    "",
  "engine": {
    "pdo-mysql":         true,
    "pdo-sqlite-memory": false,
    "pdo-sqlite-file":   false,
    "mysqli":            false,
    "postgresql":        false
  }
}