The database commonly uses an index range scan to access selective data. The selectivity is the percentage of rows in the table that the query selects, with 0 meaning no rows and 1 meaning all rows. Selectivity is tied to a query predicate, such as WHERE last_name LIKE 'A%', or a combination of predicates.
Types of Distribution: Intensive, Selective and Exclusive Distribution. Some of the important types of distribution in international market are 1. Intensive 2. Selective and 3. Exclusive distribution.
Two types of fruits with a generally different mechanism of seed distribution exist: dehiscent and nondehiscent fruits. Dehiscent fruits set the seeds free by opening of the fruit that remains itself with the mother plant. In contrast, nondehiscent fruits and their seeds are a dispersal unit.