CSI 3460 Midterm Exam | Verified with 100% Correct Answers Accurate, relevant, and timely information is the key to ____. Good decision making A data warehouse contains historical data obtained from the _____. operati
...
CSI 3460 Midterm Exam | Verified with 100% Correct Answers Accurate, relevant, and timely information is the key to ____. Good decision making A data warehouse contains historical data obtained from the _____. operational Database A desktop database is a _____ database. single-user A _____ is a character or group of characters that has a specific meaning. Field A _____ is a collection of related records. File Laurel is designing databases and begins with an abstract view of the overall data environment. As the design comes closer to implementation, where should Laurel place her focus? Details Ali needs to review the metadata of a file system. Where should they look? name node An internal _____ refers to a specific representation of an internal model, using the database constructs supported by the chosen database. Schema A(n) _____ is the equivalent of a field in a file system. Attribute _____ are important because they help to ensure data integrity. Constraints Data anomaly is defined as the condition in which all of the data in the database are consistent with the real-world events and conditions. False Database programming languages receive all application requests and translate them into the complex operations required to fulfill those requests. False Data constitute the building blocks of information. True Data is the result of processing raw facts to reveal its meaning. False Data processing can be as simple as organizing data to reveal patterns. True You are designing a conceptual model and are in the process of matching the DBMS requirements to the entity-relationship diagram (ERD) to create a data model that is software-independent. Which stage of the design phase are you doing? Logical design Your manager has requested a report that gives them a global view of the entire database being used as the basis for the identification and high-level description of main data objects without model-specific details. Which model or schema would you provide them? Conceptual A disadvantage of the relational database management system (RDBMS) is its inability to hide the complexities of the relational model from the user. False An implementation-ready data model needn't necessarily contain enforceable rules to guarantee the integrity of the data. False Elizabeth is utilizing object-oriented modeling (OOM) when collecting data about animals. She needs to define entity templates and their associated instances and subclasses. What method should she incorporate? False, Object-oriented Even when a good database blueprint is available, an application's programmer's view of the data should match that of the manager and the end user. False When adding new tables and deciding names for the attributes, which of the following should be avoided to lessen confusion? Homonyms Which of the following is a reason to use indices in a database? Retrieve data ordered by a specific attribute Which of the following options is more adequate for a primary key in a table of employees? Employee SSN A table is a three dimensional structure composed of depth, width, and height. False
[Show More]
