25 Questions
Match the following actions with their reasons based on the text:
Contacting your tutor if you do not understand any part of the study units or the assigned readings = To seek clarification and guidance on challenging concepts Preparing a list of questions before attending tutorials = To maximize benefit from course tutorials by being prepared for discussions Completing each unit with its associated TMA in one week = To ensure timely progress through the course's modules and assignments Participating actively in discussions during tutorials = To enhance learning through engagement and immediate feedback
Match the following course activities with their purposes as described in the text:
Open questions to promote discussion on relevant topics = Encouraging dialogue and deeper understanding of concepts Questions with standard answers = Testing comprehension and knowledge retention Program demonstrations on the concepts = Providing practical examples for better understanding Independent activities and case activities based on a particular scenario = Applying theoretical knowledge to real-world situations
Match the following recommendations with their purposes in the context of the text:
Advising to attend tutorials and interact with tutors = To address questions instantly and gain valuable insights Encouraging to raise any problem encountered in the course of study = Seeking assistance to overcome obstacles and enhance learning experience Proposing to spend one week on each unit with associated TMA = Ensuring systematic progress and completion within 30 weeks Emphasizing the importance of practice in learning concepts = Enhancing understanding through practical application
Match the set theoretic operation with its description:
UNION = Combines tuples that are in either result1 or result2 or both INTERSECTION = Produces tuples that are common in both result1 and result2 SET DIFFERENCE = Retrieves tuples that are in result1 but not in result2 CROSS PRODUCT = Generates all possible combinations of tuples from two relations
Match the relation with its content:
RESULT1 = Social security numbers of all employees who work in department 5 RESULT2 = Social security numbers of all employees who directly supervise an employee in department 5 RESULT = Combination of RESULT1 and RESULT2 after applying set operations TABLE 1.5 = Query result showing the output after UNION operation
Match the characteristics with union compatibility:
Same degree = Two relations must have the same number of attributes Same types of tuples = Two relations must have tuples with matching data types Binary operators = Operations like UNION, INTERSECTION, and SET DIFFERENCE are applied to two sets Adapted to relational database = Set operations are applied to relations with the same attributes
Match the correct term with its definition:
Relation = A table representing a set of tuples sharing the same attributes Union compatible = Property where two relations can undergo set operations if they meet certain conditions Degree of a relation = Number of attributes in a relation Tuple = A single row/record in a relation
Match the relational operation with its definition:
JOIN = Combine related tuples from two relations into single tuples UNION = Combine all tuples from two relations, removing duplicates DIFFERENCE = Retain tuples from one relation that do not exist in the other relation INTERSECTION = Retrieve tuples that exist in both relations
Match the following operations with their purpose:
SELECT = Identify specific tuples based on conditions PROJECT = Retrieve specific attributes from a relation CARTESIAN PRODUCT = Combine all tuples from two relations JOIN = Combine related tuples from two relations into single tuples
Match the relational algebra operation with its equivalent expression:
INTERSECTION = UNION and DIFFERENCE DIFFERENCE = UNION and INTERSECTION UNION = INTERSECTION and DIFFERENCE JOIN = CARTESIAN PRODUCT and SELECT
Match the operation with its importance in relational databases:
JOIN = Process relationships among relations PROJECT = Retrieve specific attributes from a relation UNION = Combine all tuples from two relations, removing duplicates SELECT = Identify specific tuples based on conditions
Match the operation with its purpose in relational algebra:
JOIN = Combine related tuples into single tuples CARTESIAN PRODUCT = Create pairs of all possible combinations of tuples from two relations SELECT = Filter tuples based on conditions PROJECT = Retrieve specific attributes from a relation
Match the operation with its real-world example requirement:
JOIN = Retrieve the name of the manager for each department UNION = Combine lists of unique employees from two departments SELECT = Identify employees with a salary above a certain threshold PROJECT = Retrieve only the phone numbers of employees
Match the following terms with their definitions:
Entity Type = Defines a collection of entities with the same attributes Entity Set = Collection of all entities of a particular entity type in the database Composite Attribute = Attribute that can be nested in an arbitrary way Multivalued Attribute = Attribute that can have multiple values for a single entity
Match the following examples with their attribute types:
Address Phone = Complex Attribute Area Code = Component of a composite attribute Apartment Number = Attribute with null value for single-family home address College Degrees = Attribute with null value for a person with no college degree
Match the following entities with their attributes:
Person = Residence, Phone Company = Employee Employee = Shared attributes but unique values for each entity Single-Family Home = Apartment Number, Street, City
Match the following terms with their definitions:
Value Set = Set of possible values for an attribute Complex Attributes = Attributes that can have arbitrary nesting Database Entity = Instance of an entity in the database Client-Side Scripting = Primary usage of JavaScript
Match the following components with their nesting levels:
Address Phone = Top-level component Street Address = Second-level component within Address Phone Number = Component within Area Code Number = Bottom-level component within Street Address
Match the following terms with their descriptions:
Similar Information for Hundreds of Employees = Entity Type Arbitrary Nesting of Attributes = Complex Attributes Unique Values for Each Employee Entity = Entity Set Groups of Entities Sharing Same Attributes = Multivalued Attribute
Match the following terms with their correct definitions:
Branch-name = Name of the bank branch making a loan Loan-number = Unique identifier for a loan Amount = Value of the loan Customer-name = Name of the customer taking the loan
Match the following relations with their respective schemes:
Borrow-scheme = [branch-name, loan-number, amount] Deposit-scheme = [branch-name, account-number, customer-name, balance] BD-scheme = [branch-name, loan-number, amount, account-number, balance, customer-name] Relation on scheme = A tuple representing information about loans and accounts
Match the following facts with their implications on database design:
One city for every branch = Improves database design by enforcing a one-to-one relationship Many loans per branch = Requires separate relations for better representation Combining Borrow-scheme and Deposit-scheme = Results in a new BD-scheme with more comprehensive data Tuple in relation [loan-number] = Specifies details about loans made by branches to customers
Match the following terms with their meanings in the context of database management:
Balance = Amount of money in an account Account-number = Unique identifier for a bank account Scheme = Structure defining how data is organized Relation on scheme = Representation of information using tuples
Match each term with its role in the database management system:
Branch-name = Identifies the bank branch involved in transactions Customer-name = Identifies the individual taking a loan or having an account Loan-number = Uniquely identifies each loan made by a branch Amount-number = Confusing term not clearly defined in the context
Match the following statements with their correct representation in a database scheme:
'Number assigned to an account at the branch named [branch]' = [account-number] in Deposit-scheme 'Amount of the loan whose number is [loan-number]' = [amount] in Borrow-scheme 'Name of the bank branch making a loan' = [branch-name] in Borrow-scheme 'Name of the customer taking the loan' = [customer-name] in Deposit-scheme
Learn about the importance of contacting your tutor for academic support, including seeking help with study units, TMAs, and assignment feedback. Understand how tutorials provide valuable interaction opportunities and instant answers to your questions.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
