Work through some practical examples of designing and implementing databases, using SQL to query and manipulate data, and implementing various DBMS features such as indexing and transactions. This will help you become more familiar with the tools and techniques used in the field.Stay up-to-dateKeep...
We can optimize a slow-moving SQL query by using indexing in the DBMS to find the specific rows in a table very quickly. There are several optimization techniques listed below Using Indexes Using Distinct Clause Using Having and Where clauses Avoiding correlated subqueries Using Limit to restrict...
Chapterwise Multiple Choice Questions on DBMS Our 1000+ MCQs focus on all topics of the DBMS subject, covering 100+ topics. This will help you to prepare for exams, contests, online tests, quizzes, viva-voce, interviews, and certifications. You can practice these MCQs chapter by chapter sta...
DBMS Nested-Loop Join Algorithm MCQs: This section contains multiple-choice questions and answers on Nested-Loop Join Algorithm in DBMS. Submitted byAnushree Goswami, on May 15, 2022 1. Nested loop joins are joins in which there are two nested ___ loops. ...
Use data indexing for faster lookups and consider the cost-based optimizer to dynamically choose the best query execution plan based on data statistics. 88. Discuss the challenges and solutions for real-time anomaly detection in high-velocity data streams. For anomaly detection in high-velocity ...
While indexing does a table copy and rearranges records to allow you to read off of a table sequentially, sharding will enable you to add multiple nodes where the specific record you want is only on one of those nodes. This process allows for a more bounded result in terms of retrieval ...
Most modern database management systems like MySQL, Microsoft SQL Server, Oracle, IBM DB2, and Amazon Redshift are based on RDBMS.25. What is DBMS? DBMS stands for Database Management System. DBMS is a system software responsible for the creation, retrieval, updation, and management of the ...
Also, it offers better indexing due to which it provides a competitive benefit over MySQL. 15. What is CHAR and VARCHAR in MySQL?This is one of the most important interview questions on MySQL. Both of them define a string. The core difference is that CHAR is a fixed-length while VARCHAR...
Clustered indexing changes how the storage of records is maintained in a database in a changed manner. The clustered index does this because the following classifies the rows by the columns which are ready to be the clustered index. The non-clustered index, on the other hand, does not alter...
This indexing does not allow the field to have duplicate values if the column is unique indexed. Unique index can be applied automatically when primary key is defined. Clustered Index. This type of index reorders the physical order of the table and search based on the key values. Each table...