Question
In each of the following number series, one term is
missing. Find the missing term. 7, 14, 28, 56, 112, ?Solution
Each term is multiplied by 2: 7 → 14 → 28 → 56 → 112 → 224 Missing term = 224
In a relational database, what is a candidate key?
In two-phase locking, a transaction releases its locks:
Which of the following is a non-relational database?
Which of the following is a type of phishing attack?
Which interrupt is generated by software?
Which of the following illustrates an advantage of DBMS over traditional file systems?
Which deadlock prevention scheme allows older transactions to preempt younger ones?
Which database model represents data in a tree-like structure, where each child record has only one parent?
Which SQL command is used to retrieve data from a table?
Which constraint ensures that a column contains only unique values, but allows NULL values?
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