Which of the following refers to a cursor type that when the cursor is opened, a primary key value is saved for each row in the recordset; when the application accesses a row, the key is used to fetch the current values of the row?

Managing Multiuser Databases
Which of the following refers to a cursor type that when the cursor is opened, a primary key value is saved for each row in the recordset; when the application accesses a row, the key is used to fetch the current values of the row?

Forward only

Static

Keyset

Dynamic

Forward only

Static

Keyset

Dynamic

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Managing Multiuser Databases
Locks placed by command are implicit locks.

False

True

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Managing Multiuser Databases
The advantage of optimistic locking is that:

the lock is obtained before the transaction has processed.

transactions that are best suited are those with a lot of activity.

the lock is obtained only after the transaction has processed.

the lock never needs to be obtained.

the lock is obtained before the transaction has processed.

transactions that are best suited are those with a lot of activity.

the lock is obtained only after the transaction has processed.

the lock never needs to be obtained.

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Managing Multiuser Databases
When one transaction reads a changed record that has not been committed to the database a filthy read occurs.

False

True

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Managing Multiuser Databases
Which of the following disallows both dirty reads and nonrepeatable reads, but allows phantom reads?

Read uncommitted

Read committed

Repeatable read

Serializable

Read uncommitted

Read committed

Repeatable read

Serializable

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Managing Multiuser Databases
A cursor type in which the application sees the data as they were at the time the cursor was opened is called:

forward only

keyset

dynamic

static

forward only

keyset

dynamic

static

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Managing Multiuser Databases

Managing Multiuser Databases Which of the following refers to a cursor type that when the cursor is opened, a primary key value is saved for each row in the recordset; when the application accesses a row, the key is used to fetch the current values of the row?

Managing Multiuser Databases Locks placed by command are implicit locks.

Managing Multiuser Databases The advantage of optimistic locking is that:

Managing Multiuser Databases When one transaction reads a changed record that has not been committed to the database a filthy read occurs.

Managing Multiuser Databases Which of the following disallows both dirty reads and nonrepeatable reads, but allows phantom reads?

Managing Multiuser Databases A cursor type in which the application sees the data as they were at the time the cursor was opened is called:

Managing Multiuser Databases
Which of the following refers to a cursor type that when the cursor is opened, a primary key value is saved for each row in the recordset; when the application accesses a row, the key is used to fetch the current values of the row?

Managing Multiuser Databases
Locks placed by command are implicit locks.

Managing Multiuser Databases
The advantage of optimistic locking is that:

Managing Multiuser Databases
When one transaction reads a changed record that has not been committed to the database a filthy read occurs.

Managing Multiuser Databases
Which of the following disallows both dirty reads and nonrepeatable reads, but allows phantom reads?

Managing Multiuser Databases
A cursor type in which the application sees the data as they were at the time the cursor was opened is called: