SQL Server - GETDATE(), CURRENT_TIMESTAMP in DEFAULT statements

Most of the transactional tables generally do require to have a column with DEFAULT value as current date time to identify when the transaction had took place. To accomplish this, In CREATE TABLE statement you can use GETDATE() function or CURRENT_TIMESTAMP (SQL-92 niladic function) as DEFAULT. However there is no difference in output.

CREATE TABLE Employee(
empID BIGINT PRIMARY KEY,
EName VARCHAR(40) NOT NULL,
Application_Date SMALLDATETIME DEFAULT CURRENT_TIMESTAMP,
Reporting_Date SMALLDATETIME DEFAULT GETDATE(),
Relieved_Date SMALLDATETIME DEFAULT '12/31/2010', -- mmddyyyy
Address VARCHAR(20) NULL)

INSERT INTO Employee(empID, Ename, Address) Values (1001, 'Catherin', 'NewYork')

SELECT * FROM Employee