create table variables (
  id text,
  key text,
  value text,
  type text,
  name text,
  description ,
  system boolean,
  disabled boolean
);
comment on table variables is '
  Using variables in your Postman requests eliminates the need to duplicate requests, which can save a lot of time. Variables can be defined, and referenced to from any part of a request.
';

comment on column variables.id is '
  A variable ID is a unique user-defined value that identifies the variable within a collection. In traditional terms, this would be a variable name.
';
comment on column variables.key is '
  A variable key is a human friendly value that identifies the variable within a collection. In traditional terms, this would be a variable name.
';
comment on column variables.value is '
  The value that a variable holds in this collection. Ultimately, the variables will be replaced by this value, when say running a set of requests from a collection
';
comment on column variables.type is '
  A variable may have multiple types. This field specifies the type of the variable.
';
comment on column variables.name is '
  Variable name
';
comment on column variables.system is '
  When set to true, indicates that this variable has been set by Postman
';