What are the key benefits and limitations of a relational DBMS?
What are the key benefits and limitations of a relational DBMS?
Homework Answers
Some of the key benefits of relational DBMS are:
- Reduction in data duplication
- Risk of inconsistent data is reduced, results in
better data integrity
- The Independence of data allows other views as well
of the same data
- Allows the easy extension to the structure of the
database
One of the limitations of relational DBMS is its rigidity which
comes from organizing data into tables and relations.
Q1: Define normalization in DBMS. Explain with examples two possible anomalies in a relational database tables...
Q1: Define normalization in DBMS. Explain with examples two possible anomalies in a relational database tables in which those tables need to be normalized
Q1.2. Does blackboard use DBMS? Research what database it uses and two key features that makes it...
Q1.2. Does blackboard use DBMS? Research what database it uses and two key features that makes it suitable for using it for this purpose.
Q1.2. Does blackboard use DBMS? Research what database it uses and two key features that makes it suitable for using it for this purpose.
The following tables form part of a database held in a relational DBMS for University campuses:...
The following tables form part of a database held in a relational DBMS for University campuses: - Building (buildingNo , area) ClassRoom (roomNo , buildingNo , capacity) Reserving ( buildingNo , courseNo , timeFrom , day, roomNo) Course (courseNo , courseName) Generate the tuple relational calculus, and domain relational calculus expressions for the following queries: 1. List all buildings. 2. List all class rooms in building 14Kh with capacity >30 students 3. List all course names,...
Relational DBMS query languages provide easy access to information about the organization’s activities. Does this mean...
Relational DBMS query languages provide easy access to information about the organization’s activities. Does this mean that online, real-time processing should be used for all transactions? Does an organization need real-time financial reports? Why or why not?
What are the benefits and limitations of intelligence test? What are the differences between OOD and...
What are the benefits and limitations of intelligence test? What are the differences between OOD and CD? What is the relationship between ODD, CD and antisocial personality disorder ?
when you establish a relationship between a primary and foriegn key, the dbms can enforce integrity...
when you establish a relationship between a primary and foriegn key, the dbms can enforce integrity constraints? true or false what database key links one table to another? what data base function allows you to define the data your database is storing?
what are the key weaknesses in Supportive Leadership? what are aome examples, challenges and limitations? what...
what are the key weaknesses in Supportive Leadership? what are aome examples, challenges and limitations? what are opportunities for improvementt including 3 specific actionable steps for improvement?
Relational algebra and SQL We consider the following relation Stock. The primary key of Stock is...
Relational algebra and SQL We consider the following relation Stock. The primary key of Stock is prodid, depid. prodid depid prodname quantity p1 d1 vcr 10 p1 d2 vcr 20 p2 d3 tv 30 What are the ids of the depots? (Relational algebra) What are the products (ids) in stock (quantity > 0) ? (Relational algebra)
QUESTION 1 What is the most common relationship within a relational database? Select the best answer...
QUESTION 1 What is the most common relationship within a relational database? Select the best answer from the following. One-To-One relationship. o One-To-Many relationship. Many-To-Many relationship. Zero-To-Zero relationship. QUESTION 2 What is an "entity'? Select the best answer from the following. An entity, for our purposes, is the same as a table in the database. An entity represents one of the columns in an individual table. There are no entities in a relational database. Entities are only part of NoSQL...
The following tables form part of a database held in a relational DBMS: Hotel (hotelNo, hotelName,...
The following tables form part of a database held in a relational DBMS: Hotel (hotelNo, hotelName, city) Room (roomNo, hotelNo, type, price) Booking (hotelNo, guestNo, dateFrom, dateTo, roomNo) Guest (guestNo, guestName, guestAddress) where Hotel contains hotel details and hotelNo is the primary key; Room contains room details for each hotel and (roomNo, hoteINo) forms the primary key; Booking contains details of bookings and (hoteINo, guestNo, dateFrom) forms the primary key; Guest contains guest details and guestNo is the primary key....
Q1.2. Does blackboard use DBMS? Research what database it uses and two key features that makes it suitable for using it for this purpose.
Q1.2. Does blackboard use DBMS? Research what database it uses and two key features that makes it suitable for using it for this purpose.
QUESTION 1 What is the most common relationship within a relational database? Select the best answer from the following. One-To-One relationship. o One-To-Many relationship. Many-To-Many relationship. Zero-To-Zero relationship. QUESTION 2 What is an "entity'? Select the best answer from the following. An entity, for our purposes, is the same as a table in the database. An entity represents one of the columns in an individual table. There are no entities in a relational database. Entities are only part of NoSQL...
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