Most of the traditional view maintenance algorithms only consider a single view , but there are many views in multidatabase , which contend a lot of information about ldb . if we make full use of these informations , to some views we can do view maintenance without accessing to ldb . this paper considers the problem of view self - maintenance , where the views are maintained without base database , including how to maintain a view and determining whether a view is maintainable 以往视图维护方面的研究都只考虑了单个视图的维护机制，实际上多库系统中往往有很多视图，这些视图包含了大量的底层ldb关系的信息，如果对其进行综合考虑，充分利用所有视图所包含的信息，对某些底层关系的修改，不需要访问底层ldb ，多库系统视图本身就可以进行视图维护，即视图的自维护问题。
