Strictly speaking, Community law consists of the founding Treaties (primary legislation) and the provisions of instruments enacted by the Community institutions by virtue of them (secondary legislation).
In a broader sense, Community law encompasses all the rules of the Community legal order, including general principles of law, the case law of the Court of Justice, law flowing from the Community's external relations and supplementary law contained in conventions and similar agreements concluded between the Member States to give effect to Treaty provisions.
All these rules of law form part of what is known as the Community
acquis.
See:
Monitoring the application of Community law