WebMay 13, 2024 · 10 Advanced SQL Job Interview Questions and Answers. Question 1: What is an index? What are the two main index types? An index is a structure in a database that can help retrieve data faster. When you search table data with an SQL query, it will search the whole table and return the result. Web4 A BCNF is : A loss less join and dependency preserving. B loss less join but not dependency preserving. C not loss less join but dependency preserving. D none of these. View Answer Comment. 5 Every Boyee-Codd normal form is in. A First normal form. B Second normal form.
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WebDec 15, 2024 · 3. What is TRUE about RDBMS? Representation of data is done in form of Column. Every table contains its own candidate key. There is a collection of organized set … WebA database is a logically coherent collection of data with some inherent meaning . Data can only be added and queried from a database, but not modified. Only SQL can be used to query data in a database. Correct: Correct. A database is a repository or logically coherent collection of data with some inherent meaning. nyc rent credit on tax return
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WebRule 1: Map all concrete-problem domain classes to the RDBMS tables. Also, if an abstract Problem Domain class has multiple direct subclasses, map the abstract class to a RDBMS table. Rule 2: Map single-valued attributes to columns of the tables. Rule 3: Map methods to stored procedures or to program modules. WebStudy Introduction to RDBMS quiz questions and answers, Introduction to RDBMS MCQ worksheet with answers key PDF to learn dbms MCQ Test 3 for online certification. DBMS Keys MCQs, Introduction to RDBMS MCQ Questions and answers for placement and to prepare for job interview."Introduction to RDBMS Quiz" PDF Book: dbms keys, structure of … WebIntroduction to Relational Databases ANWSER.docx - Introduction to Relational Databases RDBMS IBM 2 Graded Quiz: Introducing Relational Database. Introduction to Relational … nyc rehearsal dinner venues