1) What is an example of SQL injection? Group of answer choices A malicious user alters the query string to display sensitive data User input is used to dynamically alter a SQL statement A virus that deletes all data in the database Website that uses SQL statements to display content 2)  What regex matches the string "How was your day?"? Group of answer choices /[0-9]*\?$/ /\w+[yz]?/ /[0+9].\?$/ /day\?\$/ 3)  A cryptographic hash function is used to _____. Group of answer choices convert passwords into hashes set up third party authentication for added security decrypt passwords when users get locked out of their accounts email a reminder to users who forgot their password 4)  With which mode is the fopen() function called to overwrite an existing file? Group of answer choices r o a w     5)  Why are sessions preferred over cookies? Group of answer choices Programming sessions is less complicated than cookies Session variables require fewer memory resources Cookies can be viewed by anyone with access to the browser's computer Cookies do not expire at the end of the session

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Fundamentals of Datawarehouse

A data warehouse is a data repository which is used to store large quantities of historical data that are mostly used for creating reports that help businesses to identify their weaknesses and strengths. For example, demographics data about people of a region can help businesses identify the needs and preferences of the region’s population. A data warehouse acts as a central storage for storing data that comes from one or more heterogenous sources. It also consists of data which can be old and of historical value. One of the most important applications of this type of system is that it is used for supporting business intelligence and data analytics applications.