The delimitation of the concepts of ‘permanent transfer’ and ‘temporary transfer’ in Article 7 of Directive 96/9/EC of the European Parliament and of the Council of 11 March 1996 on the legal protection of databases is based on the criterion of the length of time during which materials extracted from a protected database are stored in a medium other than that database. The time at which there is an extraction, within the meaning of Article 7, from a protected database, accessible electronically, is when the materials which are the subject of the act of transfer are stored in a medium other than that database. The concept of extraction is independent of the objective pursued by the perpetrator of the act at issue, of any modifications he may make to the contents of the materials thus transferred, and of any differences in the structural organisation of the databases concerned. The fact that the physical and technical characteristics present in the contents of a protected database made by a particular person also appear in the contents of a database made by another person may be interpreted as evidence of extraction within the meaning of Article 7 of Directive 96/9, unless that coincidence can be explained by factors other than a transfer between the two databases concerned. The fact that materials obtained by the maker of a database from sources not accessible to the public also appear in a database made by another person is not sufficient, in itself, to prove the existence of such extraction but can constitute circumstantial evidence thereof. The nature of the computer program used to manage two electronic databases is not a factor in assessing the existence of extraction within the meaning of Article 7 of Directive 96/9.