Give an example of a schedule that is strict and serializable but not in commit order and that could have been produced by either a timestamp-ordered concurrency control or a two-phase locking concurrency control.
What will be an ideal response?
r1(x) r1(y) w2(x) commit2 commit1
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Reverse engineer the requirements of the Heathrow airport luggage system and communicate your results using the Requirements Analysis Document template presented in the lecture.
Questions to ask:
• How are the bags stored after passengers have checked, but before they
enter the plane?
• How are the bags retrieved from the storage area?
• What about existing luggage systems (“legacy systems”)?
• Scalability: How many users should the new luggage system support? How can
this be tested before deployment?
• Throughput: How many suit cases/hour need to be supported?
The istream member function _________ reads a character from the specified stream.
Fill in the blank(s) with the appropriate word(s).
When exporting an Excel table in as an XML file, you want the data exported from the table to be validated against the schema.
Answer the following statement true (T) or false (F)
The ________ consists of anonymously hosted websites that are mostly used for illegal activities.
A. dark web B. deep web C. secure web D. hidden web