Grve peduck Cenversen flleiy 25AIR 71 leun prkct write fllening Convevsion + HNC Give two key...
Write a function show_value() that takes two arguments: a potential key and a dictionary name. If the potential key is in the dictionary, the function should return the value for that key. If the potential key, say invalid_key, is not in the dictionary, it should return the string: invalid_key is not a valid key.
Write one to two pages about why new products succeed and why they fail. Please give examples of each.
71. Re-write the following r values from the Pearson Correlation in order from weakest to strongest. (5 marks) -0.86 -0.43 0.01 0.095 0.68 ________ ________ ________ _______ ________ Weakest Strongest
Consider the following optimization problem: minimize 71 subject tox,- r, where r > 0 is a given scalar 1. Write down the FONC and SONC for this problem. (5 points) 2. Shw ihai whken f is vx, nxxssary conditions a: also sufiint. (10 poimis)
Consider the following optimization problem: minimize 71 subject tox,- r, where r > 0 is a given scalar 1. Write down the FONC and SONC for this problem. (5 points) 2. Shw ihai whken f is...
For the following relations and set of FDs: 1. give a key for the relation; 2. state whether the relation is in BCNF, and if it is not state why: 3. give a set of relations in 3NF equivalent to the original relation 1. (33 points) What is the closure of (A,B) with respect to R(A,B,C,D,E,F,G)if R has the following functional dependencies? (a) GCDE AF BF - ABC FC G (b) D-AC-D A+B ABC 2 33 points for each of...
Consider a database with the following schema. LIKES(drinker,beer); /* key: all columns */ FREQUENTS(drinker,pub); /* key: all columns */ SERVES(pub,beer,cost); /* key: (pub,beer) */ Write the following queries in relational algebra. You can use the math notation (greek letters sigma, pi, etc.) or the ASCii "linear" notation I used in class. In order to make things more clear, please use intermediate results defined with the assignment notation in the algebra: R(a,b) := <rel-alg expression>. Try to give meaningful names for...
organic chemistry
1. Write two enol forms for the compound below, and state which enol predominates at equilibrium. (1 p) 2. Provide the proper product(s)reactant(s) reagent(s) of the reactions below. Please notice the no reaction! (3 pts, 0.5 pt each) NaBH снуонино NNH, NHANH,
erms Matching Match the key terms with their definitions. Write the key term letter by the appropriate numbered definition k. Foreign key 1. Multitable query m. Nul a. AND condition b. Auto Number c. Caption property d. Cascade Delete Related Records e. Cascade Update Related fields f. Comparison Operator 8. Criteria row h. Data redundancy i. Data type 1. Field property o. OR condition p. Query q. Referential Integrity r. Simple Query Wizard 5. Wildcard Special character that can represent...
10. What is the key requirement for developing economic theory that will be accepted by academics? Give an example of the requirement on demand. Define the key differences between Macro & Micro Economics. Why do we have two courses?
Given relation R(A, B, C, D, E, F), give (i) the key(s) of R and (ii) the normal form of R if the FDs are: (d) AB -> C, CD -> EF (e) AB -> CD, D -> EF, C -> AB. (f) ABC -> D, ABC -> E, ABC -> F.