Computers and Technology, 06.05.2020 00:24, stephstewart1209
The table T(A, B, C, D) has a B-tree index on the column B. Which of the followine requests may benefit from the index? Where necessary, define additional conditions under which the index will be beneficial. If the query cannot benefit from the index, suggest other solutions for improving its performance. a. SELECT * FROM T WHERE B = x; b. SELECT * FROM T WHERE B <> x; c. SELECT * FROM T WHERE B LIKE 'x'; d. SELECT * FROM T WHERE SUBSTRING(B, 1, 1) 'x'
Answers: 1
Computers and Technology, 22.06.2019 22:50, cheyennecarrillo14
Which is the best minecraft server? a. mineplex b. worldonecraft c. 9b9t d. 2b2t
Answers: 2
Computers and Technology, 23.06.2019 00:50, AmbitiousAndProud
Representa os dados de um banco de dados como uma coleç? o de tabelas constituídas por um conjunto de atributos, que definem as propriedades ou características relevantes da entidade que representam. marque a alternativa que representa o modelo descrito no enunciado. escolha uma:
Answers: 3
Computers and Technology, 23.06.2019 03:10, kyleereeves2007
Acomputer has a two-level cache. suppose that 60% of the memory references hit on the first level cache, 35% hit on the second level, and 5% miss. the access times are 5 nsec, 15 nsec, and 60 nsec, respectively, where the times for the level 2 cache and memory start counting at the moment it is known that they are needed (e. g., a level 2 cache access does not even start until the level 1 cache miss occurs). what is the average access time?
Answers: 1
Computers and Technology, 23.06.2019 20:30, cristalcastro901
If an appliance consumes 500 w of power and is left on for 5 hours, how much energy is used over this time period? a. 2.5 kwh b. 25 kwh c. 250 kwh d. 2500 kwh
Answers: 1
The table T(A, B, C, D) has a B-tree index on the column B. Which of the followine requests may bene...
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