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== Noncompliant Code Example

----
CREATE TABLE employee
(
  employee_id INTEGER NOT NULL,
  first_name VARCHAR2(42) NOT NULL,
  last_name VARCHAR2(42) NOT NULL  
);
----

== Compliant Solution

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CREATE TABLE employee
(
  employee_id INTEGER PRIMARY KEY,
  first_name VARCHAR2(42) NOT NULL,
  last_name VARCHAR2(42) NOT NULL  
);
----