Question $18(4$ points$)$

Listen

You review the database and find that a$($n$)q,$ occurred when a transaction executed a query at time $T1,$ and it ran the same query at same time $T2,$ yielding additional rows that satisfy the query.

phantom read

non repeatable read

uncommitted read

dirty read

Question $19(4$ points$)$

Listen

In most modern relational DBMSs$,$ a new database implementation requires the creation of special storagerelated constructs to house the end$-$user tables.

True

False