9781111969752_TB_ch14 - Chapter 14 Using Relational Databases TRUE\/FALSE 1 Database software recognizes the distinction between text and numeric data

9781111969752_TB_ch14 - Chapter 14 Using Relational...

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Chapter 14: Using Relational DatabasesTRUE/FALSE1.Database software recognizes the distinction between text and numeric data.ANS: TPTS:1REF:5592.In some database software packages, such as Microsoft Access, you indicate a primary key simply by selecting a column name and clicking a button that is labeled with a key icon.ANS: TPTS:1REF:5613.Some database designers insert an exclamation point after the key instead of underlining it.ANS: FPTS:1REF:5634.Entering data into an existing table is not difficult, but it requires a good deal of time and accurate typing.ANS: TPTS:1REF:5645.In many database systems, some “deleted” records are not physically removed, but they are just marked as deleted so that they will not be used to process active records.ANS: TPTS:1REF:5646.Structured Query Language is a commonly used language for accessing data in database tables.ANS: TPTS:1REF:5657.A common reason you create a one-to-one relationship is security.ANS: TPTS:1REF:5738.Normalization involves altering a table so that it satisfies one or more of four normal forms, or sets of rules for constructing a well-designed database.ANS: FPTS:1REF:5779.3NF requires that a table be in 2NF and have transitive dependencies.ANS: FPTS:1REF:58210.Database software provides the means to ensure that data integrity is enforced.ANS: TPTS:1REF:585MULTIPLE CHOICE1.In a database, the files often are called ____ because you can arrange their contents in rows and columns.
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a.sheetsc.formsb.pagesd.tablesANS: DPTS:1REF:5562.A key that is constructed from multiple columns is called a compound key or ____ key.3.When a field in a database contains a null value, it means that ____.4.If an employee record contains both a company-assigned employee ID and a Social Security number, then both columns are ____ keys.5.After you choose a primary key from among candidate keys, the remaining candidate keys become ____ keys.a.primaryc.alternateb.secondaryd.candidateANS: CPTS:1REF:5616.Depending on the software you use, you might create a query by filling in blanks in a process called ____.
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