A class of database management systems (DBMS) that do not follow all of the rules of a relational DBMS and cannot use traditional SQL to query data.16 In the 21st century, NoSQL database management systems have evolved, where data is modeled in means other than tabular relations, which is particularly useful for real-time web applications and for big data. NoSQLbased systems are typically used in very large databases, which are particularly prone to performance problems caused by the limitations of SQL and the relational model of databases. Many think of NoSQL as the modern database of choice that scales with web requirements. Some notable implementations of NoSQL are Facebook’s Cassandra database, Google’s BigTable, and Amazon’s SimpleDB and Dynamo.
Notification involves informing applicants of their enrollment decisions (in, wait-listed, or out), and onboarding involves finalizing the enrollment process for those who have been selected (conducting orientation, collecting additional information, providing option to opt-out, etc.).