Rewrite the domain relational calculus queries that followed Q0 in Section 6.7 in the style of the abbreviated notation of Q0A, where the objective is to minimize the number of domain variables by writing constants in place of variables wherever possible.
What will be an ideal response?
Q1A: { qsv | (EXISTS z) (EXISTS m) ( EMPLOYEE(q,r,s,t,u,v,w,x,y,z) AND DEPARTMENT('Research',m,n,o) AND m=z ) }
Q2A: { iksuv | (EXISTS m) (EXISTS n) (EXISTS t) ( PROJECT(h,i,'Stafford',k) AND
EMPLOYEE(q,r,s,t,u,v,w,x,y,z) AND DEPARTMENT(l,m,n,o) ) }
The other queries will not be different since they have no constants (no selection conditions; only join conditions)
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When many LAN devices are connected to a single central control point, it is called a
a. star network b. mesh network c. bus network d. ring network
Wi-Fi networks operate in basically the same way as cellular telephony networks that are designed, installed, and maintained by the wireless telephone carriers.
Answer the following statement true (T) or false (F)
The key when working with the Bristle brush is to ____________________.
Fill in the blank(s) with the appropriate word(s).
How do iOS devices synchronize with local machines or with cloud-based servers over the Internet?
What will be an ideal response?