Hvad forårsager den manglende højre parentes fejl i SQL?

brug Dato i stedet for Dato(7)

CREATE TABLE Employees(
EmployeeID NUMBER (8,0) NOT NULL, 
LastName VARCHAR2(20) NOT NULL, 
FirstName VARCHAR2(10) NOT NULL, 
Title VARCHAR2(30), 
TitleOfCourtesy VARCHAR2(25), 
BirthDate DATE,
HireDate DATE,
Address VARCHAR2(60),
City VARCHAR2(15), 
Region VARCHAR2(15),
PostalCode VARCHAR2(10), 
Country VARCHAR2(15),
HomePhone VARCHAR2(24), 
Extension VARCHAR2(4), 
Notes VARCHAR2(600), 
ReportsTo NUMBER(8,0), 
PhotoPath VARCHAR2(255),
SIN CHAR(9), 
CONSTRAINT Employees_EmployeeID_pk PRIMARY KEY (EmployeeID)
);