Foster care system. The United States foster care system enables adults to care for minor children who are not able to live with their biological parents. In fiscal year 2000, 150,703 foster children were adopted in the United States, many by their foster parents or relatives of their biological parents. The enactment of the Adoption and Safe Families Act in 1997 has approximately doubled the number of children adopted from foster care in the United States.
BlueTalon. Hashing is the transformation of a string of character s into a usually shorter fixed-length value or key that represents the original string. Hashing is used to index and retrieve items in a database because it is faster to find the item using the shorter hashed key than to find it using the original value.It is also used in many encryption algorithms.ashing is used to index and retrieve items in a database because it is faster to find the item using the shorter hashed key than to find it using the original value. It is also used in many encryption algorithms.
A hash function is any function that can be used to map data of arbitrary size to data of fixed size. The values returned by a hash function are called hash values, hash codes, hash sums, or simply hashes. One use is a data structure called a hash table, widely used in computer software for rapid data lookup.hen storing records in a large unsorted file, one may use a hash function to map each record to an index into a table T, and to collect in each bucket T [ i ] a list of the numbers of all records with the same hash value i. Once the table is complete, any two duplicate records will end up in the same bucket.