Anchors, or atomic zero-width assertions, cause a match to succeed or fail depending on the current position in the string, but they do not cause the engine to advance through the string or consume characters. The metacharacters listed in the following table are anchors. For more information, see Anchors.
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Download File: https://tinurli.com/2vCtEQ
Defenders need to be constantly vigilant and monitor the behavior of systems within their network. As workers continue to operate remotely during the COVID-19 pandemic and mix work with their private computer usage, enterprises are even more likely to be attacked by compromised personal PC equipment belonging to their employees. Employees will sometimes download modding tools or cheat engines from questionable sources to tweak their PC or games running on the same machine they use for their job. This is a serious threat to enterprise networks.
CORRECTIONS AND ADDITIONS: Remember that Postgres is case sensitive in database names. If CUSTOMER is the name of your database, spell it as CUSTOMER, never Customer or customer.
If you are working on your own computer, read the SQL Server tunneling instructions, to learn how to change the SQL Server connection URL in dbconn.config, as well as the software setup instructions, to learn how to configure Postgres to work like it does in the undergrad lab.
In the starter code, the _customer_login_statement variable was never initialized. We added the following missing line to the prepareStatements() method:_customer_login_statement = _customer_db.prepareStatement(_customer_login_sql); Project2.java was checking that the CID should be greater than zero, whereas there was no reason to disallow zero. We changed this condition to be cid >= 0 instead of cid > 0.HOW TO TURN IN: Please use the dropboxto submit your code.
You also need to worry about concurrency. A user may try to cheat and coerce your application to violate the constraint C2 above by running two instances of your application in parallel, with the same user id: depending on how you write your application and on race conditions, the malicious user may succeed in renting more movies than he/she is allowed. You need to ensure that each instance of your application runs in isolation, i.e. the I in ACID. HINT: Transactions are your friends again.
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