If your SQL query does not include a WHERE statement, then how many records will be selected?
A) All
B) None
C) Your SQL statement must include a WHERE statement.
D) Your query will pause upon execution for user entry, just like a parameter query.
A
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A store displays items on shelves. An item is described by a unique item Id, Iid, its manufacturer, Man, its name, Name, the space it occupies on a shelf, Space, its cost, Cost, and its retail price, Price. A shelf is described by a unique shelf Id, Sid, and its size, Size. You can assume any reasonable domains for these attributes.
(a) Assume some items are placed on shelves. When an item is placed on a shelf a date, Remove Date, is specied at which time the item will be removed from the shelf. Give an E-R diagram that completely describes the entities and relationships of this plan. (b) In this part you are to translate the entity and relationship sets of (8a) to tables using SQL. Show all keys (foreign and otherwise). (c) We would like the database schema to enforce the restriction that the only valid shelf sizes are 100, 150, 200, and 300. Use SQL to do this. d) Show how the E-R diagram of (8a) changes if we add the restriction that no shelf is empty. (e) Sales people need not be concerned with the cost or item Ids of items. Create a view of Items that does not contain these attributes.
In the IPv4 header, what is the size of the source and destination address fields?
A) 128 bits B) 32 bits C) 64 bits D) 16 bits
As part of your company's comprehensive security program, the security auditor periodically reviews the audit logs to determine if any new controls need to be implemented. This an example of which type of control?
A. Administrative control B. Technical control C. Physical control D. Detective control E. Preventive control F. Recovery control G. Statements b and d only H. Statements a and e only I. Statements c and f only
Which of the following is a communications device that connects multiple computers and transmits data?
A. ?network B. ?infrastructure network C. ?ad hoc network D. ?router