Article Categories
- All Categories
-
Data Structure
-
Networking
-
RDBMS
-
Operating System
-
Java
-
MS Excel
-
iOS
-
HTML
-
CSS
-
Android
-
Python
-
C Programming
-
C++
-
C#
-
MongoDB
-
MySQL
-
Javascript
-
PHP
Database Articles
Page 8 of 546
What 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 MorePhysical Database Design and Tuning
Introduction Have you been grappled with slow database performance and clueless how to optimize it? Fact is, efficient physical database design and tuning can significantly enhance your database operations. In this enlightening article, we will unravel practical methods that revamp your system's speed by addressing bottlenecks, utilizing proper indexing strategies, optimizing queries, storage management and much more. Overview of Physical Database Design Physical database design plays a crucial role in the overall performance and efficiency of a database system, as it involves making decisions about how the data is stored, organized, and accessed at the physical level. Importance Physical ...
Read MorePredicate Locking
Introduction To ensure both concurrency control and data integrity within database management systems (DBMS). Several locking mechanisms are employed — among them, one is being predicate locking. By utilizing this particular type of lock for protecting specified sections of the stored information from conflicting operations seeking simultaneous access. DBMS guarantees foolproof security measures. By designating a single transaction at a time for reading or modifying a given set of records predicate locking effectively eliminates inconsistencies that might occur due to concurrent access. Moreover. The lock is directly associated with specific predicates. Making it feasible for different subsets of ...
Read MorePrimary Indexing in Databases
Introduction Primary indexing is a crucial component of database management systems as it greatly enhances the efficiency of retrieving data. Its main objective is to establish a primary key and index. Which in turn enables quick and precise searches. By assigning a unique identifier to each record and creating an index. Primary indexing permits rapid access to specific data. Not only does it improve the overall performance of the system but it also facilitates efficient operations such as record insertion and updates while minimizing disk input/output operations. In this era of digital advancements primary indexing is an essential ...
Read MorePrivacy Issues and Preservation
Introduction In the age of technology we live in today. Preserving our personal information and maintaining our privacy has become an urgent concern. Our digital footprints encapsulate valuable information which can be leveraged by opportunistic entities solely for their own gain; inevitably triggering concerns regarding the safeguarding of our privacy rights and personal records. Just like an ecosystem needs preservation for its longevity. Protecting our digital footprints from external threats is crucial. The consequences of unregulated access to personal data can have serious implications such as targeted advertising and identity theft. It has undeniably become a matter of utmost importance ...
Read MoreProblems due to database unavailability
Overview For organizations grappling with database unavailability issues there are considerable challenges that can impact their operational efficiency as well as financial outcomes not to mention the importance of having access to real time information. Given that databases function as repositories for important data any delay or inability in accessing this crucial information can result in far reaching consequences. Operational efficiency gets hampered when employees lack access to necessary data resulting in diminished productivity and frustrated customers. Financial implications include missed chances of generating revenue. Costs associated with repairs or upgrades. And long-term harm to a companys reputation and ...
Read MoreProduction databases in SQL queries
Overview Production databases are crucial for storing and retrieving data in organizations. SQL queries are essential for efficiently retrieving specific information from these databases. The article aims to equip readers with practical knowledge for working with production databases using SQL queries. Understanding SQL Queries and Relational Databases Relational databases provide a structured framework for organizing and storing data efficiently. Data modeling techniques, including normalization, help in designing effective databases. Understanding these concepts is essential for writing SQL queries that retrieve information accurately and efficiently from complex databases. Let’s dive into a few real world examples − Example 1 Creating ...
Read MoreReferential Integrity Rule in RDBMS
Referential Integrity Rule in DBMS is based on Primary key and Foreign Key. The Rule defines that a foreign key have a matching primary key. Reference from a table to another table should be valid.Referential Integrity Rule example −EMP_IDEMP_NAMEDEPT_IDDEPT_IDDEPT_NAMEDEPT_ZONEThe rule states that the DEPT_ID in the Employee table has a matching valid DEPT_ID in the Department table.To allow join, the referential integrity rule states that the Primary Key and Foreign Key have same data types.
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 More