Legislative Bills. Legislation begins with the submission of a bill to the legislature for consideration. A bill is a draft, or tentative version, of what might become part of the written law.
SQL Server 2005: using symmetric keys to encrypt data. In SQL Server 2005, the recommended method for encrypting data is to use symmetric keys. A symmetric key can be created using the CREATE SYMMETRIC KEY statement. Information about symmetric keys is stored in the sys.symmetric_keys catalog.
Where symmetric encryption is used to protect Confidential data: 1  Master keys shall be changed at least once per year. 2  Key encrypting keys shall be changed at a minimum of twice per year. 3  Data encrypting keys shall be changed once per session or every 24 hours.