The court has dismissed the criminal case against you, whether through a deferred adjudication program or another mechanism. While that is certainly good news, you should be aware that, without further action, your arrest record remains available to employers, landlords and other people you may not wish to share this information with.
In Texas, an expunction completely destroys your arrest records and any other case documents. Thus, no one, including law enforcement, will know that you were ever arrested and charged. Once you obtain an expunction, you can state on employment or rental applications that you were never arrested.