Hello Learners, In this Post, you will find NPTEL Introduction to Database Systems Assignment 1 Answers 2023. All the Answers are provided below to help the students as a reference don’t straight away look for the solutions.
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NPTEL Introduction to Database Systems Assignment 1 Answers 2023:
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State TRUE or FALSE:
Q.1. A database is a collection of related pieces of data.
- True
- False
Q.2. Database systems are designed to manage large amounts of information.
- True
- False
Q.3. DBMS is a software system for database management and manages a single database.
- True
- False
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Q.4. Many users can concurrently access a particular database.
Q.5. The information stored in a database is actually stored in secondary storage.
- True
- False
Q.6. DBMS guarantees the availability of data when a user tries to retrieve the data.
- True
- False
Q.7. In DBMS, record structures are hard-coded into its internal programs.
- True
- False
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Q.8. A “log” in the RDBMS keeps track of update operations of all transactions.
- True
- False
Q.9. What is the most appropriate matching between the following sets where set S1 represents a type of enterprise and set S2 represents the type of information that an enterprise wants to store as a database?
S1: {w: Airline; x: Telecommunication; y: Banking; z: Universities} S2: {p: reservation and schedule information; q: customers, accounts, loans, and associated information; r: information about the communication networks; s: information about students, courses, grades, etc.}
Q.10. Consider the statements given below:
S1: Data abstraction is the DBMS characteristic that allows program-data independence.
S2: Data models allow representation of a database at different levels of detail. Choose the correct option:
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Q.11. Consider the statements given below:
S1: Meta-data is the descriptions of the relation schemas and associated constraints.
S2: DBMS stores data and meta-data in the database catalog. Choose the correct option:
- S1: True; S2: True
- S1: True; S2: False
- S1: False; S2: True
- S1: False; S2: False
Q.12. Consider the statements given below:
S1: Database schema is specified during the design stage and describes the database.
S2: The scheme of a database changes frequently.
- S1: True; S2: True
- S1: True; S2: False
- S1: False; S2: True
- S1: False; S2: False
Q.13. What is the most appropriate matching between the following sets w.r.t. data abstraction:
S1: {w: physical level; x: logical level; y: view level}
S2: {p: describes what data is stored; q: describes how the data is stored; r: describes only part of the database}
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Q.14. Typically, a database administrator (DBA) is responsible for:
Q.15. Consider a typical data retrieval request in DBMS. Find the statement which is TRUE.
- The data retrieval query always returns the records in sorted order.
- The query formulation is based on the conceptual schema.
- The query formulation is based on the physical schema.
- None of the above is TRUE.
Q.16. What is FALSE regarding the relational data model:
- A relational database consists of a collection of tables.
- The term “tuple” refers to an element in a relation instance.
- The tuples in a relation instance appear in a sorted order.
- For each attribute of a relation, there is a set of permitted values.
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About NPTEL Introduction to Database Systems Course:
Databases are the backbone of almost all the digital services and e-governance solutions. Modern businesses and financial systems heavily depend on databases systems and transaction processing for their successful operation. This course introduces the students to the various theoretical and practical principles involved in the design and use of databases systems with the help of database management systems (DBMS) and the SQL Standard
Course Layout:
- Week 1 : Introduction and part of E/R Model Module
- Week 2 : ER Model Module
- Week 3 : Relational Model Module
- Week 4 : Relational Model Module
- Week 5 : TRC Module and part of SQL Module
- Week 6 : SQL Module
- Week 7 : Indexes Module
- Week 8 : Indexes Module + Query Processing Module
- Week 9 : Normal Forms Module
- Week 10 : Normal Forms Module
- Week 11 : Transaction Processing Module
- Week 12 : Transaction Processing Module
CRITERIA TO GET A CERTIFICATE:
Average assignment score = 25% of average of best 8 assignments out of the total 12 assignments given in the course.
Exam score = 75% of the proctored certification exam score out of 100
Final score = Average assignment score + Exam score
YOU WILL BE ELIGIBLE FOR A CERTIFICATE ONLY IF AVERAGE ASSIGNMENT SCORE >=10/25 AND EXAM SCORE >= 30/75. If one of the 2 criteria is not met, you will not get the certificate even if the Final score >= 40/100.
If you have not registered for exam kindly register Through https://examform.nptel.ac.in/
