List and describe the four anomalies that may occur when creating database tables.
What will be an ideal response?
1. Data redundancy occurs when the same data are stored in more than one place in the database.
2. An insert anomaly occurs when the entire primary key is not known and the database cannot insert a new record, which would violate entity integrity.
3. A deletion anomaly happens when a record is deleted, resulting in the loss of other related data.
4. An update anomaly results when a change to one attribute value either causes the database to contain inconsistent data or causes multiple records to need changing.
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In addition to variables, Ruby also permits the storage of collections of data using which of the following constructs?
A. Arrays and Hashes B. Lists and Collections C. Variables and Constants D. None of the above
Before using Scenario Manager, you should assign _______ to all the input and result cells you intend to use in your scenarios.
A. cells B. names C. ranges D. ranks
Human speech is ______ because it uses continuous (wave form) signals that vary in strength and quality.
Fill in the blank(s) with the appropriate word(s).
The older 64-bit operating systems can only handle 4 GB of RAM.
Answer the following statement true (T) or false (F)