SQL – Creating Other Schema Objects Questions 1. Which database object among the following provides a layer of abstraction between the users and the data? Table Rows Views Synonyms Answer: C, D. Views and Synonyms do not store data themselves. A view is a temporary or virtual table used to retrieve data stored in underlying […]
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SQL – Manipulating Data Questions 1.What does ACID mean with respect to relational database? Accuracy, Consistency, Isolation, Database Accuracy, Concurrency, Isolation, Durability Atomicity, Consistency, Isolation, Durability Atomicity, Concurrency, Isolation, Durability Answer: C. All Oracle transactions comply with the basic properties of a database transaction, known as ACID properties. Atomicity states that all tasks of a […]
SQL – Using DDL Statements Questions 1.What is the full form of DDL in Oracle DB? Data Deleting Language Data Definition Language Data Delegating Language Dummy Data Language Answer: B. DDL is one of the categories of SQL which stands for Data Definition Language. Other SQL types are DML, DCL, and TCL. 2.DDL statements are […]