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You are hired to help the Lead Technical Analyst of the FBI Behavioral Unit in joining various tables and doing cross-references to help the FBI field agents to fight crimes. You are working up against an incredibly tight deadline because the suspects (the “unsub”) may strike again in 24 hours. The tables that you are working with are big, but not sorted or indexed. You need to implement a decent join algorithm.  Will you choose tuple-based nested-loop join, block-based nested-loop join, sort-merge join, or hash join? Please justify your answer, i.e., clearly explain why you think your choice is the best among these 4 options by discussing inputs, pseudocode, and complexity for the join algorithm you are choosing. 

Which of the following statements about relational algebra equivalence rules is correct?

Which of the following statements is FALSE when it comes to discuss why I/O costs are important in DBMS 

Reading B Read the following Japanese folktale. (1 x 5 = 5) 強(つよ)い＝strong　都(みやこ)＝capital; metropolis　お姫(ひめ)さま＝princess　家来(けらい)＝servant　鬼(おに)＝demon Choose “True” if the information is correct. If the information is not correct, choose “False”. Issunboshi is short but a strong boy. [1] Issunboshi wanted to go to the capital to become a rich samurai. [2] Issunboshi was spending time with the princess and didn’t work hard. [3] The demon wanted to take the beautiful princess to home. [4] Issunboshi and the princess married, and they had a nice life. [5]

A growing pig is consuming adequate energy and crude protein but is depositing excessive fat rather than lean tissue. Which issue should be investigated first?

How do the proventriculus and ventriculus (gizzard) work together during digestion in birds?

Beet pulp may appear higher in “sugar” than alfalfa on a feed tag. Why can this be misleading?

Across species, which of the following organs is the primary site of enzymatic digestion and nutrient absorption?

A growing horse receiving a large amount of alfalfa hay has adequate dietary energy and protein intake but is growing at a slower rate than expected. What is the most likely explanation?

A horse with a metabolic disorder is losing weight. Which feed would be the safest option to increase energy without substantially increasing starch?