WGU C175 Data Management Foundations Latest 2022 Rated A

WGU C175 Data Management Foundations Latest 2022 Rated A They can serve as a communication tool between the users and designers. Which of the following is true of business rules? entity A(n) _______ is anything about which data are to be collected and stored. XML/Hybrid data model Oracle 11g is an example of the _______. entity instance Each row in the relational table is known as a(n) relational data model MySQL is an example of the _______. attribute A(n) _______ is the equivalent of a field in a file system. entity relationship The _______ model was developed to allow designers to use a graphical tool to examine structures rather than describing them with text. entity relationship The _______ model uses the term connectivity to label the relationship types. 1980s The object-oriented data model was developed in the _______ . network In the _______ model, the user perceives the database as a collection of records in 1:M relationships, where each record can have more than one parent. constraints _______ are important because they help to ensure data integrity. Crow's Foot notation In ________, a three pronged symbol represents the "many" side of the relationship. data definition language (DDL) A(n) _______ enables a database administrator to describe schema components. file system data model VMS/VSAM is an example of the _______. 1960s The hierarchical data model was developed in the _______. hierarchical One of the limitations of the _______ model is that there is a lack of standards. entity A(n) _______ represents a particular type of object in the real world. data manipulation language (DML) A(n) ________ defines the environment in which data can be managed and is used to work with the data in the database. constraint A(n) _______ is a restriction placed on the data. They are not based on the relational model. Which of the following is true of NoSQL databases? provide fault tolerance. NoSQL databases: relationship A verb associating two nouns in a business rule translates to a(n) _______ in the data model. business rule A(n) _______ is a brief, precise, and unambiguous description of a policy, procedure, or principle within a specific organization. business rules From a database point of view, the collection of data becomes meaningful only when it reflects properly defined _______ . It does not have standards Which of the following is a disadvantage of the hierarchical data model? relation The relational model's foundation is a mathematical concept known as a relationship A(n) _______ is bidirectional. 1970s The relational data model was developed in the _______. hierarchical In the _______ model, each parent can have many children, but each child has only one parent. client node Which of the following types of HDFS nodes acts as the interface between the user application and the HDFS? attribute Each column in a relation represents a(n) method In object oriented terms, a(n) ________ defines an object's behavior. tuple Each row in a relation is called a(n) data model A(n) ________ is a relatively simple representation of more complex real-world data structures. constraints _______ are normally expressed in the form of rules. many-to-many Students and classes have a _______ relationship. model A(n) ______'s main function is to help one understand the complexities of the real world environment. class A(n) _______ is a collection of similar objects with a shared structure and behavior. entity A noun in a business rule translates to a(n) _______ in the data model. schema A(n) _______ is the conceptual organization of an entire database as viewed by a database administrator. name node Which of the following types of HDFS nodes stores all the metadata about a file system? hierarchical In the _______ model, the basic logical structure is represented as an upside-down tree. object-oriented The _______ data model is said to be a semantic data model. segment A(n) _______ in a hierarchical model is the equivalent of a record in a file system. object-oriented The _______ data model uses the concept of inheritance. unique When you define a table's primary key, the DBMS automatically creates a(n) _____ index on the primary key column(s) you declared.