OCA,OCP,OCM silly to be confused?

Perhaps you know oca, OCP, ocm relationship is a more difficult than a test, a higher than a gold, but you know the specific test subjects, test methods, employment situation difference. If you don't know it, this article will make you glance at the plain.
Difference One: Gold content
OCA: The first step for database professionals to embark on Oracle database authentication
Represents a basic knowledge of Oracle database management.
OCP: Database professionals have proven industry accreditation for Oracle-specific technology, proving that the holder is able to establish and manage key Oracle database functions in the most efficient manner.
OCM: Oracle Authority for the highest level of database professionals with years of hands-on experience in Oracle technology and advanced skills training.
Difference Two: Contents of the examination
OCA: Master Course Administration Workshop I (042) and a SQL related course Introduction to SQL (007) or SQL Tuning Workshop (047).
OCP: Master Course Administration Workshop I and a SQL related course Introduction to SQL (007) or SQL Tuning Workshop (047). And mastering the Course Administration Workshop II (043);
Take part in a factory training.
OCM: The person who participates in the certification must obtain the Oracle database OCP certificate;
Complete the two advanced courses or WDP courses offered by Oracle OEM;
Two heavenly Machine operation examination is qualified.
The difference three: authentication obtains the way
OCA: No need for OEM training, need to pass two exams
Ocp:oca and OCP certification can be tested together, through the OCP at least to attend a factory training or WDP, through the three examinations
OCM: Need to attend at least two original advanced course training or WDP training courses, and pass the two-day Test on the machine
Difference Four: Examination fees (USD for United States dollars)
OCA: The cost of the two exams is 195usd*2 or 195USD+125USD
OCP: From OCA to OCP to pay 195USD test fees and the original training costs (minimum 6K), or 195USD test fees and WDP training costs, direct test OCP to pay the three-door test costs 195usd*3 as well as the original training of one or WDP training costs.
The registration fee for the OCM:OCM examination is 8K per door. Each course's original training expense list Price is about 14,000 yuan, but the WDP training may find the channel discount discount.
Difference Five: the employment situation
OCA: Have the opportunity to enter the DBA related industry has been very good, the annual salary of about 40,000
OCP: is a good ticket, but whether it is competent to work still need to examine the actual operation in the work, annual salary 50,000 to 100,000
OCM: Only hundreds of people in China earn more than 120,000 annual salary
Difference Six: The original meaning of English
Oracle Database Administrator authentication Specialist (OCA): Oracle Certified Associate
Oracle Database Administrator Certification specialist (OCP): Oracle Certified Professional
Oracle Database Administrator certification guru (OCM): Oracle Certified Master
How, is not to answer the doubts in your heart. This time will not OCA, OCP, OCM again silly cent not clear.