Building on Case Project 13-1, you want to be able to check the status of the blinds and make them controllable using your mobile phone through your home network. You also want to have a series of indicators on the device that indicate the following status conditions: 1. Power is applied to the device. 2. The device detects someone in the room. 3. Direct sunlight is detected. 4. It is dark. What hardware changes do you need to make to this project

Asoftware company hired ray, a college graduate to work in their development team. ray is assigned to work in the coding phase of a project. what happens during the coding phase of a software development project? a. the customer receives a working model of the software. b. developers convert the program design into code. c. developers gather requirements directly from the stakeholders. d. testing teams check the product for quality.

You are consulting for a beverage distributor who is interested in determining the benefits it could achieve from implementing new information systems. what will you advise as the first step?

Suppose there is a relation r(a, b, c) with a b+-tree index with search keys (a, b).1. what is the worst-case cost of finding records satisfying 10 < a < 50 using this index, in terms of the number of records n1, retrieved and the height h of the tree? 2. what is the worst-case cost of finding records satisfying 10 < a < 50 and 5 < b < 10 using this index, in terms of the number of records n2 that satisfy this selection, as well as n1 and h defined above? 3. under what conditions on n1 and n2, would the index be an efficient way of finding records satisfying the condition from part (2)?