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Title      : MSCS-508 Database Management System-DBMS
Subject      : Computer Science
copyright © 2018   : Karnataka State Open University
Author      : KSOU
Publisher      : Karnataka State Open University
Chapters/Pages      : 24/299
Total Price      : Rs.      : 222
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Overview of DBMS Total views (307)  
This unit is about the need for a Database Management Systems (DBMS). It starts with definition of DBMS. It gives a brief history of DBMS. It compares DBMS with conventional file systems provided by operating systems. It describes problems with conventional file systems. It also gives the advantages of DBMS. At end you understand the levels of abstraction in a DBMS.
Pages: 10
Price: Rs 0   
Structure of DBMS Total views (303)  
This unit is about structure of DBMS. It starts with Data Independence, where we study the importance of data independence and types of data independence. It gives a detailed structure of DBMS. It also describes various people who deal with databases. Separation of data from processing, either so that changes in the size or format of the data elements require no change in the computer programs pr ......
Pages: 10
Price: Rs 7.5   
Conceptual Data Models for Database Design Total views (303)  
This unit is about data models and some related terminologies. Data modeling in software engineering is the process of creating a data model by applying formal data model descriptions using data modeling techniques. Data modeling is a method used to define and analyze data requirements needed to support the business processes of an organization. The data requirements are recorded as a conceptual d ......
Pages: 10
Price: Rs 7.5   
Entity Relationship Model Total views (302)  
This unit describes Entity-Relationship (ER) data model, which is used to describe data at the conceptual and view level. It is based on the perception of the real world. It also deals with design issues and problems with ER model. The Entity-Relationship(ER) data model is used to describe data at the conceptual and view level. It is based on the perception of the real world. It perceives the rea ......
Pages: 9
Price: Rs 6.75   
Relational Model Concepts Total views (725)  
The Relational model was proposed by E.P Codd in the year 1970. It is relatively new, compared to older models hierarchical 'model and network model. The relational model has become the most common commercial data model. Relations are actually the mathematical table. This unit introduces relational model concepts.
Pages: 10
Price: Rs 7.5   
Relational Algebra Total views (725)  
The Relational Algebra: A relational algebra is an algebra defined over relations. The inputs are relations and the output is also a relation. Similar to normal algebra, except we use relations as values instead of numbers, and the operations and operators are different. It is not used as a query language in actual DBMS. The relational algebra is a procedural query language.
Pages: 17
Price: Rs 12.75   
Introduction to SQL Total views (728)  
SQL is a standard query language for accessing and manipulating databases. SQL stands for Structured Query Language. It is an ANSI (American National Standards Institute) standard. Note that are there are many different versions of the SQL language. The original version was developed at IBM·s San Jose Research Laboratory. It was originally called Sequel and implemented as part of System R project ......
Pages: 20
Price: Rs 15   
Modifications and Constraints Specifications Total views (723)  
This unit deals with database modifications in SQL, along with assertions, views, stored procedures, and triggers.
Pages: 13
Price: Rs 9.75   
Relational Database Design Total views (723)  
The goal of relational database design is to generate a 'set of .relation schemes with some desirable properties. These schemes generated ' should 'allow ' us to store information without unnecessary -redundancy. Th˘y 'should also allow us to' retrieve information easily. Here, we deal with the goodness of a database design.
Pages: 7
Price: Rs 5.25   
Axiomatization of Functional Dependencies Total views (723)  
In this unit, we study Functional Dependencies (FD) in depth. We will understand' the theory of functional dependencies. We start with properties of functional dependencies, among the most important are Armstrong's axioms. We discuss closure of attributes sets, closure of a set of FDs, equivalence of sets of FDs, and canonical cover.
Pages: 8
Price: Rs 6   
Normalisation Total views (724)  
The concept of normalization· was introduced by Edgar F. Caddo Normalization is the process of organizing data ·to minimize redundancy to improve storage' efficiency; data integrity. and scalability. 'The goal of database' normalization is to decompose relations with anomalies -in order 'to 'produce smaller; well-structured relations. :The objective is to' isolate data so that insertions,- deleti ......
Pages: 9
Price: Rs 6.75   
Algorithms for Relational Database Design Total views (726)  
In this unit, we will learn various algorithms to design relational database schemes. There are various algorithms to design relational database schemes. Here we study the important ones. The design process of relational database schemes is basically decomposing given database scheme into a set of relatively smaller schemes 'with some desirable properties.
Pages: 9
Price: Rs 6.75   
Data on External Storage Total views (722)  
.Data storage refers to -computer data 'storage which includes memory, components, devices and media that retain digital computer data used for computing for some interval of time. Data storage is device that records (stores) ·or retrieves (reads) information from any medium.
Pages: 11
Price: Rs 8.25   
Various Types of Indexing Total views (722)  
Indexes are additional auxiliary access structures on already organized files (with some primary organization), Indexes ·speed up the retrieval of records under certain search conditions. Database performance is again the issue around which we are going to-carry out our discussions in this unit. Indexes play a similar role in database systems as they do. ·in that they are used to speed ......
Pages: 15
Price: Rs 11.25   
Index Data Structures, Hash Based Indexing Total views (728)  
A database index is a data structure that improves the speed of data retrieval operations on a database table at the cost of slower writes and increased storage space. Indexes can be created using one or more columns of a database table, providing the basis for both rapid random look ups and efficient access of ordered records. The disk space required to store the index is typically less than that ......
Pages: 12
Price: Rs 9   
Tree Based Indexing Total views (725)  
There are many basic data structures that can be used to solve application problems. Array is a good static data structure that can be accessed randomly and is fairly easy to implement. "Linked Lists on the other hand is dynamic and is ideal for application that requires frequent operations such as add, delete, and update. One drawback of linked list is that data access is sequential. One other da ......
Pages: 17
Price: Rs 12.75   
Introduction to Transaction Management Total views (725)  
Many criteria can be used to classify DBMS. One of which, is the number of users supported by the system".Single user systems support" only one user at a time and mostly used with personal computers. Multi-user systems, which include the majority of DBMS, support many users concurrently.'
Pages: 18
Price: Rs 13.5   
Concurrency Control Total views (727)  
The purpose of this unit is to introduce the fundamental technique of concurrency control, which provides database systems the ability to handle many users accessing to data simultaneously. The unit also describes the problems that arise out of the fact that users wish to query and update stored data at the same time, and the approaches developed to address these problems together with their resp ......
Pages: 10
Price: Rs 7.5   
Concurrency Control Mechanisms Total views (728)  
Concurrency control is the management of contention for data resources. Concurrency control ensures that database transactions are performed, concurrently without violating' the data integrity of the respective databases. Thus concurrency control is an essential element for correctness in any system where two database transactions or more, executed with time overlap, can access the same data.
Pages: 14
Price: Rs 10.5   
Recovery Mechanisms Total views (726)  
Database systems, like any other computer systems, are subject to failures. Despite this in any organization that depends upon a database must have that database available when it is required. Therefore, any DBMS intended for a serious business or organizational user must have adequate facilities for fast recovery after failure. In particular, whenever a transaction is submitted to a DBMS for ex ......
Pages: 13
Price: Rs 9.75   
Introduction to Oracle Total views (728)  
The Oracle Database (simply referred as Oracle) is an object-relational database management system (ORDBMS) produced and mark~ted by Oracle Corporation. Larry Ellison and his friends and former co-workers Bob. Miner and Ed Oates started the consultancy Software Development Laboratories (SDL) in 1977. SDL developed the original version of the Oracle software. The name Oracle comes from the code-nam ......
Pages: 18
Price: Rs 13.5   
Concurrency Control and Recovery Total views (729)  
Oracle supports concurrency control and recovery techniques. There are a number of features. In a single-user database, the user can modify data in the database without concern for other users modifying the same data at the same time. However, in a multi-user database, the statements within. multiple simultaneous .transactions can update 'the same data. Transactions executing at the same time . ne ......
Pages: 13
Price: Rs 9.75   
Introduction to DB2 Total views (728)  
DB2 is firm's data server software product, with roots dating back to the 1970s. It is, a relational database management system that comes in a variety of versions, running on . devices ranging from handhelds to' mainframes. It primarily runs on Unix (namely AIX), Linux IBM i, z/OS and Windows servers.
Pages: 14
Price: Rs 10.5   
Concurrency Control and Recovery in DB2 Total views (736)  
Concurrency is the ability of a database management system to allow multiple users to access data at the same time while maintaining the integrity and consistency of the data Since one of the main benefits of a DBMS is the ability to share data among multiple users" and multiple applications, the database system should provide a means for managing concurrent access to the data, The DBMS must ensu ......
Pages: 12
Price: Rs 9   

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