\"Parameters" : {
  ...
  "DBName" : {
    "Default": "wordpress",
    "Description" : "The WordPress database name",
    "Type": "String",
    "MinLength": "1",
    "MaxLength": "64",
    "AllowedPattern" : "[a-zA-Z][a-zA-Z0-9]*",
    "ConstraintDescription" : "must begin with a letter and contain only alphanumeric characters."
  },
  "DBUsername" : {
    "Default": "admin",
    "NoEcho": "true",
    "Description" : "The WordPress database admin account user name",
    "Type": "String",
    "MinLength": "1",
    "MaxLength": "16",
    "AllowedPattern" : "[a-zA-Z][a-zA-Z0-9]*",
    "ConstraintDescription" : "must begin with a letter and contain only alphanumeric characters."
  },
  "DBPassword" : {
    "Default": "admin",
    "NoEcho": "true",
    "Description" : "The WordPress database admin account password",
    "Type": "String",
    "MinLength": "8",
    "MaxLength": "41",
    "AllowedPattern" : "[a-zA-Z0-9]*",
    "ConstraintDescription" : "must contain only alphanumeric characters."
  },
  "DBAllocatedStorage" : {
    "Default": "5",
    "Description" : "The size of the database (Gb)",
    "Type": "Number",
    "MinValue": "5",
    "MaxValue": "1024",
    "ConstraintDescription" : "must be between 5 and 1024Gb."
  },
  ...
},