a) Reliability b) Productivityc) Abstraction d) All of the mentioned What are the characteristics of Data in a Database? In view level, there are different levels of views and every view only defines a part of the entire data. Define the following terms: (i) Data abstraction (ii) Class (iii) Dynamic binding (iv) Polymorphism Last Answer : Benefits of denormalization: * Reduce number of relations: It reduce the number of relations because it combines two relations into one new relation. HRD View HRD that basically needs data on employees, that is, support staff andacademic staff, employee benefit information, and so on. View level: The highest level of abstraction describes only part of entire database. 1.Abstraction solves the problem at design level while encapsulation solves the problem at implementation level 2.Abstraction is used for hiding the unwanted data and giving relevant data. Database design meets thedata requirements of the organization at large. For example :Foreign key constraints, Explain advantages of centralized and distributed databases. Describe client server system with example. How to implement Data Abstraction in Ruby? The complex data structure details is described at this level. Insulation between programs and data (Data Independence) 4. Simple attribute: A simple attributes are those which cannot be subdivided. Asmentioned earlier, during the requirement determination, we gather the information about variousbusiness processes and the data required by each process. Describe enhanced ER model with the help of example. What is the lowest level of abstraction in any hardware description language? Last Answer : answer:Abstract data classes are analogous to mathematical constructions. Question :: Three Levels of Data Abstraction. The designer of database must combine data requirements from all users before coming upwith the final database. Define the term Foreign Key. Explain various types of Relational constraints. Last Answer : (C) Encapsulation, Cohesion is an extension of: (A) Abstraction concept (B) Refinement concept (C) Information hiding concept (D) Modularity All rights reserved. It tries to describe the entire or whole data because it describes what tables to be created and what are the links among those tables that are created. Hence the change in the DBMS software may require change in the mapping of the ERmodel in order to meet the DBMS requirements. Last Answer : All of Above, Point out the wrong statement. Define (i) Data Abstraction, (ii) Data Redundancy. (4) Only I is correct. Define the following terms: (i) Data abstraction (ii) Class (iii) Dynamic binding (iv) Polymorphism, Explain three level architecture of Database. Levels of abstraction simplify database design. Accounts View Student Accounts (a division of Business Office) that needs data onfinancial aid, scholarships and student payment of fees. Here if the conceptual view of the data is altered or changed, the user view of the data does not get affected. a) Abstraction enables the key benefit of cloud computing: shared, ubiquitous access b) Virtualization assigns a logical name for a physical resource and then provides a pointer to that physical resource when a request is made c) All cloud computing applications combine their resources into pools that can be assigned on demand to users d) All of the mentioned, Cloud computing is an abstraction based on the notion of pooling physical resources and presenting them as a ________ resource. It also helps in saving cost and time in case of modifications and alterations in the database. It is also said to be semantic data model. 
Thus, we need to know what is the need in terms of data that can be met from the databasewe design. Eg:Rollno- symbol 2. Last Answer : There are following three levels or layers of DBMS architecture: External Level : Describes part of the database that a particular user group is interested in. By using this website, you agree with our Cookies Policy. a) real b) virtual c) cloud d) none of the mentioned (1) Neither I nor II is correct. Define abstraction. This level describes the user interaction with database system. Database systems include complex data-structures. I. Abstraction allows us to focus on what something and II are correct. We want to design database that will meet collectively data requirements of all of the abovegroups. Describe client server system with example. Data is present in the form of rows and columns for the users. This method has an advantage it combines all theexternal views into organizational data requirements and also depicts the relationships that existamong the data. a) Polymorphism b) Abstraction c) Virtualization d) None of the mentioned Last Answer : virtual, Which of the following cloud concept is related to pooling and sharing of resources? Having conceptualized,it is easy to conceive it. The physical level of abstraction defines how data is, Abstraction at the logical level describes, The view level or external level of abstraction describes the. chal be chal ganvarr..i like it ke bache kabhi padha bhi kya school me bhangi kahi ka. Slotty Casino Hotel and Spa - MapyroFind out how many restaurants inside the casino are in the Casino. Let us understand this concept by taking example. a) Abstraction b) Virtualization c) Mobility Pattern d) All of the mentioned, Point out the wrong statement. What is the difference between data and information in DBMS? Enrollment View Registrar Office that needs data on student registration and studentsexam scores. For example, if there is a change in the size of the storage of the database, there will be no effect on the conceptual structure of the database. The internal model is specific to the selection of DBMS. Student Account needs data on students, student registration in eachsemester, fees assessment, scholarships award, and financial aid. Plan table will hold data on various health and life insurance plans. In our database design, the conceptual level represents the organizationalview of the data that combines or integrates all external views into a single view. Data Abstraction can also be defined as the process of hiding the implementation details and showing Java, it is implemented by the use of interfaces or by making the class abstract. The highest level of abstraction describes only part of the entire, database. Abstraction shows only important things to the user and how it work? View of data in DBMS describes the abstraction of data at three-level i.e. The seals, cords, labels and bags required to be preserved in connection with investigation into a case of loss or abstraction in the RMS should be preserved in the personal custody of the: (A) Head Sorting Assistant (B) Record Officer (C) Office Supervisor of the Superintendents office, Which of the following is a tool in design phase ? It is an organization-wide representation of the data as viewed by the high-level managers. a) real b) virtual c) cloud d) none of the mentioned a) Abstraction enables the key benefit of cloud computing: shared, ubiquitous access b) Virtualization assigns a logical name for a physical resource and then provides a pointer to that physical resource when a request is made c) All cloud computing applications combine their resources into pools that can be assigned on demand to users d) All of the mentioned, Cloud computing is an abstraction based on the notion of pooling physical resources and presenting them as a ________ resource. a) Abstraction b) Virtualization c) Mobility Pattern d) All of the mentioned, Point out the wrong statement. Last Answer : Database Management system File processing system 1. a) Abstraction enables the key benefit of cloud computing: shared, ubiquitous access b) Virtualization assigns a logical name for a physical resource and then provides a their resources into pools that can be assigned on demand to users d) All of the mentioned EER reflects data properties and constraints more precisely example: Square, Circle, Triangle are the sub class of Shape super class. The lowest level is physical, and it tells how storing of data takes place in memory. What is Data Abstraction? This level is the least complex and easy to understand. Last Answer : Data: Data can be defined as facts or information that can be recorded and have an implicit meaning. Developers use data abstraction to increase the efficiency of the system in retrieving of data and reducing the complexity of these structures for users. simplify their interaction with the system. Each user group will look at only what they need without regard to others. This offers us the flexibility at the conceptual level modeling since any changein the hardware or database management software will have no effect on conceptual level. 
Mainly there are three levels of abstraction for DBMS, which are as follows , These levels are shown in the diagram below . Last Answer : Data abstraction is defined as *Suppression of details of data organization and storage *Highlighting of the essential features for an improved understanding of data *The characteristic that allow of data abstraction. Describe the three levels of data abstraction? The conceptual model is not affected. Last Answer : Relational Constraints Relational constraints are a set of rules. Explain three tier architecture of database with the help of diagram. Last Answer : Virtualization. Many users, of the database system do not need all this information; instead, they need, to access only a part of the database. Athletic View Athletic Department that needs data on those students who take part inone or more sports representing university at regional, state, and national level sportsevents. We identify the user groups as follows: Note that here we have identified only few user groups within the university, but there may bemore user groups which are not covered in our discussion. What are the Components of Database System Environment? Benefit table will hold data on benefits opted by employee. What is the lowest level of abstraction in any hardware description language? a) Reliability b) Abstraction c) Productivity d) None of the above Last Answer : Inheritance: 1. Encapsulation allows us to consider complex ideas while ignoring irrelevant detail that would confuse us. a) Polymorphism b) Abstraction c) Virtualization d) None of the mentioned, Which of the following should be replaced with the question mark in the following figure? (3) Only II is correct. List of the Steps Involved in Installation of MIS. The process helps simplify complex data structures. We make use of cookies to improve our user experience. 7. Last Answer : There are three levels of abstraction: Physical level: The lowest level of abstraction describes how data are stored. Conceptual Level: Describes structure of is the one that concerns the way the data are physically stored on the hardware. The seals, cords, labels and bags required to be preserved in connection with investigation into a case of loss or abstraction in the RMS should be preserved in the personal custody of the: (A) Head Sorting Assistant (B) Record Officer (C) Office Supervisor of the Superintendents office The user gets the ease of access to use the database at this level. The same database can be viewed multiple times, but storage and implementation details are kept hidden from the user. Describe object-oriented data models. While we create conceptual schema using ERM, it should be noted that ER model is independentof database software (DBMS) that we can use to create our database. There are complex data structures in the database systems. a) Reliability b) Productivityc) Abstraction d) All of the mentioned, The program which provide partitioning, isolation or abstraction is called? (A) Coding (B) Testing (C) Maintenance (D) Abstraction Last Answer : Virtualization, Which of the following is essential concept related to Cloud? Last Answer : b) Abstraction. This level of data independence means the modification of physical schema without making any alterations in the logical schema, which is done for optimization. Describe centralized database system with example. Last Answer : Centralized Database System: 1. What is difference between Encapsulation And Abstraction? HRD needs data on employees. As wemove from one level (high-level conceptualization to the lower level of implementation) of datamodel to another, we add more detail to the business objects. In fact, eachuser group may think that we are designing database for them only and hence their view of data. For users to access the data easily, these complications are kept hidden, and only the relevant part of the database is made accessible to the users through data abstraction. Privacy. This is just design criteria, and it is not mandatoryto have three tables Employee, Staff, and Professor. In terms of retrieval of data, reduce complexity in terms of usability of users and in order to make the system efficient, developers use levels of abstraction that hide irrelevant details from the users. This level means the ability to modify logical schema without any alterations to the external schema. The modifications may include the utilization of new storage devices, change of data structures and alterations in indexes. Last Answer : Application server or Web server *Adds intermediate layer between client and the database server *Runs application programs and stores business rules Clients contain GUI interfaces and GUI format. Explain data encapsulation and data abstraction. The data requirements for such division or department may be just a small data-setneeded to meet their functional requirements. To get a better view of the datapresentation, we use most commonly used conceptual model: the Entity Relationship Model (ERM). Abstraction and encapsulation are fundamental principles that underlie the object oriented approach to software development. Why abstraction in java is called as a mathematical entity? What can you say about the following two statements? (2) Both I and II are correct. We often use the wordconceptualization, which means the overall idea about the situation at hand. View level can be used by all users (all levels' users). In Euclidean geometry, for example, the axioms would be like the methods in an abstract Java class. If you have any suggestions and queries you can contact us on the below details. Define (i) Data Abstraction, (ii) Data Redundancy. (3) Only II is correct. Last Answer : (D) Abstraction, In windows 2000 operating system all the processor-dependent code is isolated in a dynamic link library called (A) NTFS file system (B) Hardware abstraction layer (C) Microkernel (D) Process Manager During this process the database designeris likely to collect lot of informationnot all needed in the beginning to model the data. Only common set ofinformation are stored in a one table Employee. It uses access methods, including random or sequential access and file organization methods including B+ trees or hashing. What is difference between Encapsulation And Abstraction? Student Life View Student Life that needs data on those students who live on campus inthe hostels. Last Answer : A: Act of representing only essential features without including its background details is called Abstraction. But server runs a database management system which manages the whole database. Describe centralized database system with example. The organizational data requirements are met by this level of abstraction. An object-oriented database is collection of objects whose with other objects. a) Abstraction enables the key benefit of cloud computing: shared, ubiquitous access b) Virtualization assigns a logical name for a physical resource and then provides a their resources into pools that can be assigned on demand to users d) All of the mentioned All the data reside at a single location and is cheaper than other types of databases as it requires less power and maintenance. Get the inside scoop on the casino's slot machines, restaurants, and slots. We will be very happy to hear from you. Describe the three levels of data abstraction? Thus the user interfaces, application rules and the database acts as three tier. Last Answer : (B) Record Officer, Which of the following is a tool in design phase ? Data Abstraction is a process of hiding unwanted or irrelevant details from the end user. The identification of data requirements of each usergroup involves identification of user view of data. 
Last Answer : (i) Data abstraction: Abstraction refers to the act of representing essential features without including the background details or explanation. Employee table will hold employee information; Staff table will hold data on special. Last Answer : (1) Neither I nor II is correct. client's CPU and memory. Abstraction means displaying only essential information and hiding the background details of the implementation. Describe enhanced ER model with the help of example. A. virtualization hypervisor B. software hypervisor C. hardware hypervisor D. system hypervisor, Which of the following should be replaced with the question mark in the following figure? Last Answer : All cloud computing applications combine their resources into pools that can be assigned on demand to users, _______ is the essential concept related to cloud? 2. These levels of abstraction give rise to two levels of data independence, namely physical level data independence, and logical level data independence. We will follow the levels of abstractionof data as we move from user level data requirements to the physical representation of the data in thedatabase. When we combine all the external views,the resulting design must meet the data need of all the user groups. Doing so, our entities will be mapped to tables. The view level of abstraction exists to. Last Answer : Advantage of Centralized databases * Data integrity is maximized -Data integrity is maximized and data redundancy is minimized because data is stored at a single place. Last Answer : Ans. Persistent Data 2. 
1. Difference Between Abstraction and Data Hiding. * Reduce number of foreign keys: It reduce number : It is always application-specific and needs to be re-evaluated if the application changes. It is used to maintain the quality of information. The process of removing detail from a given state representation is called ______ a) Extraction b) Abstraction c) Information Retrieval d) Mining of data A FOREIGN KEY is a field (or collection of fields) in one table that refers to the PRIMARY KEY in another table. The physical implementation of the database in the selected database management software andthe hardware system selected follow these three levels, as shown in Figure one below. Last Answer : Object Oriented Model : Object oriented models were introduced to overcome the shortcomings of conventional models like Relational, Hierarchicaland network model. A centralized database consists of a single data server into which all data are stored and from which all data are retrieved. It is a collection of conceptual tools for describing data, data relationships, data semantics and consistency constraints. Explain three level architecture of Database a) Polymorphism b) Abstraction c) Virtualization d) None of the mentioned It is at this level that weidentify the main data objects and describe with minimum detail. Abstraction and encapsulation are fundamental principles that underlie the object oriented approach to software development. What can you say about the following two statements? Thus, each user view of data represents one external view. Define the term Data Model. a) Reliability b) Abstraction c) Productivity d) None of the above, Which of the following cloud concept is related to pooling and sharing of resources? 
For example, customer's information is stored in tables and data is stored in the form of blocks of storage such as bytes, gigabytes etc. Since the terms in the axioms allow you to work with types that really are undefined and that have to be instantiated. The process of removing detail from a given state representation is called ______ a) Extraction b) Abstraction c) Information Retrieval d) Mining of data. Data abstraction has three levels: physical, logical, and view. Data abstraction is the process of defining a data type, often more than one form at different instances depending on the type or number of arguments. Last Answer : Abstraction, Which of the following cloud concept is related to pooling and sharing of resources? Since information collected from support staff is not same asthe information collected from the academic staff, the HRD has suggested that we store some distinctinformation about academic staff and non-academic staff in separate tables. What is the data Dictionary or metadata in DBMS? It is less complex than the physical level. The changes or modifications may include: So, the data abstraction helps to simplify the complex structures of the database. (A) Inheritance (B) Polymorphism (C) Encapsulation (D) Abstraction, Cohesion is an extension of: (A) Abstraction concept (B) Refinement concept (C) Information hiding concept (D) Modularity. Last Answer : Ans. a) Abstraction enables the key benefit of cloud computing: shared, ubiquitous access b) Virtualization assigns a logical name for a physical resource and then provides a their resources into pools that can be assigned on demand to users d) All of the mentioned Job table will hold different job classification. Last Answer : Enhanced ER is a high-level data model that incorporates the extensions to the original ER model. Real Life Example of Abstraction in Java. Logical level is used by developers or database administrators (DBA). Last Answer : (C) Information hiding concept. a) Abstraction b) Virtualization c) Mobility Pattern d) All of the mentioned Logical, This is the intermediate level and consists of the information in the form of tables stored in the database. This level describes the user interaction with database system. Last Answer : virtualization hypervisor, Which of the following should be replaced with the question mark in the following figure? We call this as three -level architecture of database design. Explain three tier architecture of database with the help of diagram. Describe the three levels of data abstraction with diagram. 
Integrity constraints ensure that the data insertion, updating, and other - It establishes parent child relationship between two tables. Abstraction Refinement Information Hiding All of Above, Point out the wrong statement. What is the difference between abstraction and encapsulation in Java. Learn more. So, overall, the entire database is described in this level that is physical or internal level. It is the lowest level of abstraction for DBMS which defines how the data is actually stored, it defines data-structures to store data and access methods used by the database. Last Answer : Data encapsulation: The wrapping up of data and function into a single unit (called class) is known as encapsulation. How is it implemented in Java? Last Answer : Abstraction, The program which provide partitioning, isolation or abstraction is called? a) real b) virtual c) cloud d) none of the mentioned, Which of the following cloud concept is related to pooling and sharing of resources? Presence of Self-describing nature of a database system and Metadata. Sharing of data and multiuser transaction processing 6. Physical level: This is the lowest level of data abstraction. One is Client and the other one is Server . Last Answer : (D) All of the above, Module design is used to maximize cohesion and minimize coupling. Explain different types of attribute with example and their symbols used in ER diagram. Define Data and instance. Last Answer : Different types of attributes are: 1. For example, a user can interact with a system using GUI that is view level and can enter details at GUI or screen and the user does not know how data is stored and what data is stored, this detail is hidden from the user. Revolutionary Data Storage Solution: RAID. What is Data Abstraction? A. virtualization hypervisor B. software hypervisor C. hardware hypervisor D. system hypervisor While designing the database, the factors required are memory size and the number of times it records. Which phase is not available in software life cycle? II. 3. Student Account Division is a part of the Business Office that deals with the student fees,scholarships and financial aids. Using ERM we create conceptual schema that is used to design the database. 2. Actually, it is decided by developers or database application programmers how to store the data in the database. Explain data encapsulation and data abstraction. The functions that operate on these data are called as member functions. Composite attribute: a composite attribute is value can be calculated or determined from another attribute Eg: age from dateofbirth Symbol. Alterations in entities of table structures. Let us take a hypothetical university, Your Area Learning University, for which we want todesign database. The external view for Registrar Office isshown in Chens Notations in ERD as follows. Let us say, we decide to use relational DBMS, then our conceptual model will be mapped to theinternal model of the RDBMS.