Quiz Lesson I Data Management Foundations

Quiz Lesson I Da Data ta Management F Fo ounda undations tions 1. A _____ is a logically connected set of one or more fields that describes a person, place, or thing. Record – database – file - column 2. Which of the following is true of spreadsheet applications? They are a better alternative to databases. They do not allow manipulation of data once entered. They provide enhanced security and robust data sharing features. They enhance the user's ability to understand the data. 3. 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 4. Data processing can be as simple as organizing data to reveal patterns. True 5. DBMS is a collection of programs that manages the database structure and controls access to the data stored in the database. 6. An operational database is sometimes referred to as an enterprise database. False 7. Data independence exists when it is possible to make changes in the data storage characteristics without affecting an application program's ability to access data. 8. A data anomaly develops when all required changes in the redundant data are not made successfully. 9. The term _____ refers to an organization of components that define and regulate the collection, storage, management and use of data within a database environment. database system management system transaction structured data 10. Information is produced by processing data 11.The DBMS reveals much of the database's internal complexity to the application programs and users. False 12. A desktop database is a _____ database. distributed workgroup multiuser single-user 13. Performance tuning relates to activities that make a database operate more efficiently in terms of storage and access speed. 14.A _____ contains at least all of the attribute names and characteristics for each table in the system. relational schema data dictionary database logical schema 15._____ refer to a type of database that stores most of its data in RAM rather than in hard disks. Desktop databases Cloud databases Integrated databases In-memory databases 16._____ serve as the intermediary between the user and the database. Programming languages End-user data Metadata DBMSs 17._____ exists when different versions of the same data appear in different places. Conceptual dependence Data inconsistency Poor data security Structural dependence 18.A(n) _____ might be written by a programmer or it might be created through a DBMS utility program. operating system database management system application query 19.A _____ is a character or group of characters that has a specific meaning. Field Record - file – database 20._____ is the body of information and facts about a specific subject. A database Validation A format Knowledge 21.Data is said to be verifiable if: The data cannot be changed or manipulated. the data always yields consistent results. the data is stored in different places within the database the data is obtained from trusted sources. 22.The term Islands of information refers to scattered locations storing the same basic data. 23.______ provide a description of the data characteristics and the set of relationships that link the data found within the database. Metadata End-user data Queries Schemas 24.Which of the following refers to the situation where the same data is stored unnecessarily at different places? Data query Data integrity Data dictionary Data redundancy 25.To reveal meaning, information requires context 26.The DBMS uses the data dictionary to look up the required data component structures and relationships, thus relieving programmers from having to code such complex relationships in each program. 27.One advantage of a database system over previous data management approaches is that the database system is considerably less complex. 28.The organization of data within folders in a manual file system is determined by _____. its date of creation the data processing specialist the title of the documents in the folder its expected use 29.Most data that can be encountered are best classified as _____ . Unstructured Historical Structured Semistructured 30.The response of the DBMS to a query is the ______. integrated view of the data ad hoc query ad hoc response query result set 31.A data warehouse can store data derived from many sources. True 32.An advantage of database systems is that you don't need to perform frequent updates and apply the latest patches. False 33.A workgroup database is a(n) _____ database. Distributed single-user multiuser desktop 34.Data warehouse contains historical data obtained from the_____. enterprise databases workgroup databases operational databases desktop database 35.Data is the result of processing raw facts to reveal its meaning. False 36.the same data might be simultaneously structured and unstructured depending on the intended processing. True 37.The database structure itself is stored as a collection of files, and the only way to access the data in those files is through the DBMS. True 38.One disadvantage of a database system over previous data management approaches is increased costs. True 39.Data and information are essentially the same thing. False 40.An ad hoc query is a spur-of-the-moment question. 41.An XML database supports the storage and management of _____ XML data. semistructured structured multistructured fullystructured 42.Structural dependence exists when it is possible to make changes in the file structure without affecting the application program's ability to access the data. False 43. Extensible Markup Language (XML) is a special language used to represent and manipulate data elements in a textual format. 44. Information is the result of processing raw data to reveal its meaning. 45.Data constitute the building blocks of information. True 46.Raw data must be properly formatted for storage, processing and presentation. 47.____ are the result of formatting disorganized data in order to facilitate storage, use and generation of information. Structured data Raw data Unstructured data Obsolete data 48.Database programming languages receive all application requests and translate them into the complex operations required to fulfill those requests. False 49.A(n) ______ database is used by an organization and supports many users across many departments. Enterprise Desktop Workgroup Transactional 50.Corporations use only structured data. False 51. data inconsistency exists when different and conflicting versions of the same data appear in different places. 52.A(n) _____ database supports a relatively small number of users (usually fewer than 50) or a specific department within an organization. Enterprise Workgroup Desktop Transactional 53. Data redundancy exists when the same data are stored unnecessarily at different places. 54.A _____ is a collection of related records. Schema Field File Column 55.Field refers to a collection of related records. False 56._____ relates to the activities that make the database execute transactions more efficiently in terms of storage and access speed. Performance tuning Database design Query access Database management 57._____ is the result of revealing the meaning of raw facts. Information An encrypted bit An encoded sample End-user data 58.A(n) query is a specific request issued to the DBMS for data manipulation. 59.One disadvantage of the DBMS is that it increases the risk of data security breaches. False 60.Metadata describe the data characteristics and the set of relationships that links the data found within the database. True 61._____ is defined as the condition in which all of the data in the database are consistent with the real-world events and conditions. Data ubiquity Data quality Data integrity Data anomaly 62._____ data exist in a format that does not lend itself to processing that yields information. Semistructured Unstructured Historical Structured 63.Accurate, relevant, and timely information is the key to _______. Understanding Knowledge good decision making data management 64. Metadata is data about data through which the end-user data are integrated and managed. 65.End-user data is ______. accurate, relevant and timely information knowledge about the end users raw facts of interest to the end user information about a specific subject 66.The database structure in a DBMS is stored as a ______. single file collection of queries set of key/value pairs collection of files 67.____ data exist in the format in which they were collected. Structured Semistructured Unstructured Historical 68. Analytical databases focus primarily on storing data used to generate information required to make tactical or strategic decisions.