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Big Data Analytics Articles
Found 1,345 articles
How to create a B-Tree in DBMS?
A B-tree is a self-balancing tree in data structures that allows efficient storage of sorted data. Each node can hold multiple keys and have many child nodes. B-trees are versatile data structures that can efficiently handle large amounts of data. However, traditional binary search trees become inefficient for storing and searching large datasets due to their lower performance and high memory usage. B-trees, balanced trees, are self-balancing trees designed to overcome these limitations. B-trees are characterized by the large number of keys that can be stored in a single node, often called "large key" trees. Each node in a ...
Read MoreProgram for Fibonacci numbers in PL/SQL
Given ‘n’ numbers the task is to generate the Fibonacci numbers in PL/SQL starting from 0 to n, where the Fibonacci series of integers is in the form 0, 1, 1, 2, 3, 5, 8, 13, 21, 34 Where integers 0 (1st place) and 1 (2nd place) will have a fixed place after that, the previous two digits will be added to get the integer of the next place as shown below. 0+1=1 (3rd place) 1+1=2 (4th place) 2+1=3 (5th place) and So on. Formula Sequence F(n) ...
Read MoreBig Data Career Opportunities for Non Programmers
Those who are not good at programming think that there is no scope for them in the field of "Big Data". Well... this is not the case. Big Data presents an extensive range of job options. Positions including data analysts, business intelligence specialists, data visualization specialists, and data governance professionals have opened up due to the increasing need for data-driven choices. Learning how to use programs like Excel, Tableau, and Power BI can help non-programmers get started in a constantly evolving industry.1. Analyst of DataIn order to find trends, patterns, and useful insights, data analysts concentrate on analyzing raw data. ...
Read MoreWhat is shared memory architecture in parallel databases?
In parallel database system data processing performance is improved by using multiple resources in parallel. In this CPU, disks are used parallel to enhance the processing performance. Operations like data loading and query processing are performed parallel. Centralized and client server database systems are not powerful enough to handle applications that need fast processing. Parallel database systems have great advantages for online transaction processing and decision support applications. Parallel processing divides a large task into multiple tasks and each task is performed concurrently on several nodes. This gives a larger task to complete more quickly. Architectural Models There are several ...
Read MoreWhat is shared nothing architecture in parallel databases?
In parallel database system data processing performance is improved by using multiple resources in parallel. In this CPU, disks are used parallel to enhance the processing performance. Operations like data loading and query processing are performed parallel. Centralized and client server database systems are not powerful enough to handle applications that need fast processing. Parallel database systems have great advantages for online transaction processing and decision support applications. Parallel processing divides a large task into multiple tasks and each task is performed concurrently on several nodes. This gives a larger task to complete more quickly. Architectural Models For Parallel Database ...
Read MoreFuture of RDBMS
BigData and NoSQL are the choice for database solutions nowadays, but that does not mean the crucial features of RDBMS will die. Since 90% of the world data produced in last some years, therefore the need for RDBMS will not end in the near future.The RDBMS market is incrementing with 9% annual growth, as stated by Gartner, a research company. RDBMS is meant to handle organized data. NoSQL and Big Data maybe a preferred choice, but the importance of RDBMS will not end in near future.Managing data on a large scale now needs technologies like Big Data, but RDBMS still ...
Read MoreExplain the concept of secondary index in DBMS
In secondary Index (Unique value) is created for each record in a data file which is a candidate key. Secondary index is a type of dense index and also called a non clustering index.Secondary mapping size will be small as the two levels DB indexing is used.While creating the index, generally the index table is kept in the primary memory and the main table is kept in secondary memory because of its size.A table may contain thousands of records for this reason the sparse index becomes so large which cannot be handled in primary memory.Also, if we cannot keep the ...
Read MoreExplain about two phase locking (2PL) protocol(DBMS)
Locking and unlocking of the database should be done in such a way that there is no inconsistency, deadlock, and no starvation.2PL locking protocolEvery transaction will lock and unlock the data item in two different phases.Growing Phase − All the locks are issued in this phase. No locks are released, after all changes to data-items are committed and then the second phase (shrinking phase) starts.Shrinking phase − No locks are issued in this phase, all the changes to data-items are noted (stored) and then locks are released.The 2PL locking protocol is represented diagrammatically as follows −In the growing phase transaction ...
Read MoreExplain attributes and the different types of attributes in DBMS?
Attributes are the properties which describe an entity. Example The attributes of student entity are as follows − Roll number Name Branch Age Types of attributes The different types of attributes are as follows − Composite attribute It can be divided into smaller sub parts, each sub part can form an independent attribute. For example − ...
Read MoreExplain the role of the Database Administrator in DBMS?
A database administrator (DBA) is a person or group in charge of implementing DBMS in an organization. The DBA job requires a high degree of technical expertise. DBA consists of a team of people rather than just one person.The primary role of Database administrator is as follows −Database designPerformance issuesDatabase accessibilityCapacity issuesData replicationTable MaintenanceResponsibilities of DBAThe responsibilities of DBA are as follows −Makes the decision concerning the content of the database.Plans the storage structure and access strategy.Provides the support to the users.Defines the security and integrity checks.Interpreter backup and recovery strategies.Monitoring the performance and responding to the changes in the ...
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