[lemma=and] □ □
[lemma=and] [□] □
[lemma=and] [] □
Over time , this problem is being overcome with older communities but Szekeres in a museum context and Burn in a library and archival context , each point to the difficulties in working with recently arrived communities and the danger that some communities may be underdocumented . On the contrary , this research has demonstrated that the knowledge which belongs to and identifies the professional archivist , and is constituted by diplomatics and archival science , is indispensable to the design of records systems and record-keeping and - preservation systems capable of serving the business and accountability needs of a record creator so that its records will be created reliable and maintained authentic as long as they are needed for action or reference . The theoretical basis for the general premises concerning the nature of records and the conditions necessary for ensuring their trustworthiness were the principles and concepts of diplomatics , which studies records as individual entities , and archival science , which studies records as aggregations .