SSD7. ex1. Part II Write SQL statements as specified below. You may find this help on setting up your DBMS useful. Submit your SQL statements in a file named createDB.sql. Write the DDL statements to create the two tables using the CREATE

开源的no-sql的数据库redis的2.6.13版本中，修改了intset的代码，增加了降级功能，可以减少内存的消耗。-Open source no-sql database redis the 2.6.13 version, modified intset code, increasing the degradation function, you can reduce memory consumption.