In my view these two concepts differ in scope. Privacy is the broader concept that also covers the privacy of your home. Data protection aims at preventing third parties from harming you through the misuse of your personal information - German legal definition. The latter is also reflected in the EU data protection directive:

Art. 1 "Member States shall protect the fundamental rights and freedoms of natural persons, and in particular their right to privacy with respect to the processing of personal data."

Source: http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=CELEX:31995L0046:EN:HTML)

Confidentiality assumes full protection of any information relating to a person. Data protection legislation intended to ensure the integrity of the exclusive list of personal information about a person who strictly listed in a specific legislative act.

Data Protection Jurisprudence and privacy jurisprudence are interlinked terms and both have closed meaning so far. What kind of legal provisions should be managed for data protection? how competitive regulatory mechanism is there in implementing data protection regulation? Is data protection regulation enough to protect right to privacy ?and does it competent and comprehensive to keep balance between right to information and right to privacy ? are the main focuses of data protection jurisprudence as per my knowledge and understanding.

Protection of privacy in Polish legal system is based on civil law while means of data protection are in the scope of administrative law. I would say that data protection system is a subsystem of privacy protection in general.

Privacy law comprises of the bodily privacy, communicational privacy and informational privacy. Data protection is only concerning the informational privacy.