What SQL command can be used to add columns to a table?
A. ALTER TABLE TableName ADD ColumnName
B. ALTER TABLE TableName ADD COLUMN ColumnName
C. MODIFY TABLE TableName ADD ColumnName
D. MODIFY TABLE TableName ADD COLUMN ColumnName
Answer: Option A
A. ALTER TABLE TableName ADD ColumnName
B. ALTER TABLE TableName ADD COLUMN ColumnName
C. MODIFY TABLE TableName ADD ColumnName
D. MODIFY TABLE TableName ADD COLUMN ColumnName
Answer: Option A
A. Structured Query Language
B. Structured Query List
C. Simple Query Language
D. None of these
Which is the subset of SQL commands used to manipulate Oracle Database structures, including tables?
A. Data Definition Language(DDL)
B. Data Manipulation Language(DML)
C. Both of above
D. None
Which operator performs pattern matching?
A. BETWEEN operator
B. LIKE operator
C. EXISTS operator
D. None of these
What operator tests column for the absence of data?
A. EXISTS operator
B. NOT operator
C. IS NULL operator
D. None of these
answer should be B ithink
option B is also valid!
Answer should be "B"