hi, this a design database question , i have a detail table that only 
have 4 columns, i want ot replicate it with slony:

CREATE TABLE horarios_general
(
  idplan int4 NOT NULL,
  idhorario int4 NOT NULL,
  dia_inicio int4 NOT NULL,
  dia_fin int4 NOT NULL,
  hora_inicio time NOT NULL,
  hora_fin time NOT NULL
)

it doesnt have a primary key, would it be a problem if the key is 
confirmed of all the table's columns?, is that recommended?

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miguel