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 […]
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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 […]
SQL – Using the Group Functions Questions 1. Which of the following is NOT a GROUP BY function? MAX MIN NVL AVG Answer: C. NVL is a general function used to provide alternate value to the NULL values. The functions MAX, MIN and AVG can be used as GROUP BY functions. 2. Which of the […]