MySQL and Postgresql dependency strings with Scala, SBT, build.sbt, or the Play Framework

If you need to use MySQL or Postgresql dependency strings with Scala, SBT, build.sbt, or the Play Framework, these dependency settings work fine, as of October 9, 2012:

  "mysql" % "mysql-connector-java" % "5.1.18"

  "postgresql" % "postgresql" % "9.1-901.jdbc4"