Review Questions Chapter 3 1. Which command is used to create a table based on data already contained in an existing table? 2. List four datatypes supported by Oracle 12c, and provide an example of da…
Review Questions Chapter 3
1. Which command is used to create a table based on data already contained in an existing
table?
2. List four datatypes supported by Oracle 12c, and provide an example of data that could be stored by each datatype.
3. What guidelines should you follow when naming tables and columns in Oracle 12c?
4. What is the difference between dropping a column and setting a column as unused?
5. How many columns can be dropped in one ALTER TABLE command?
6. What happens to the existing rows of a table if the DEFAULT value of a column is
changed?
7. Explain the difference between truncating a table and deleting a table.
8. If you add a new column to an existing table, where does the column appear in relation to existing columns?
9. What happens if you try to decrease the scale or precision of a NUMBER column to a
value less than the data already stored in the field?
10. Are a table and the data contained in the table erased from the system permanently if a
DROP TABLE command is issued on the table?
Create a new file named famous_ships and fill it with the following (exactly) Millennium Falcon Uss Enterprise Death Star Y Wing Battlestar Galactica Death Star In the space below write the command yo…
Create a new file named famous_ships and fill it with the following (exactly) Millennium Falcon Uss Enterprise Death Star Y Wing Battlestar Galactica Death Star In the space below write the command you used to start writing to the file famous_ships
which is the most typical in a three their web archiecture
which is the most typical in a three their web archiecture
what is teh main diffence between a classic peer to peer architecture vesus a hybrid peer to peer
what is teh main diffence between a classic peer to peer architecture vesus a hybrid peer to peer
If you have not named an executor in your will, the probate court will: Multiple choice question. appoint an administrator to carry out the instructions of your will. automatically appoint your spouse…
If you have not named an executor in your will, the probate court will: Multiple choice question. appoint an administrator to carry out the instructions of your will. automatically appoint your spouse or next of kin as executor.
Discuss: You are hired as an Expert witness to testify on Big Data and Forensic Data Analytics. What is meant by these terms? How would you prepare for the testimony? What standards are you held t…
Discuss: You are hired as an Expert witness to testify on Big Data and Forensic Data Analytics. What is meant by these terms? How would you prepare for the testimony? What standards are you held to? What can you expect on the day of the trail? How would this change if you were hired for Cyber Forensics? Provide intext citation and references
In Cortex XDR 3.2, what is the primary mechanism for traversing the user interface?
In Cortex XDR 3.2, what is the primary mechanism for traversing the user interface?
Explain why the first index of an array is zero, rather than one.
Explain why the first index of an array is zero, rather than one.
The _______ center is a mechanism for exchanging information and intelligence. Fusion Union Technical Cohesion
The _______ center is a mechanism for exchanging information and intelligence. Fusion Union Technical Cohesion
A well-known visualization for Project Management is a _________________________, which is great for illustrating the duration of a task or an operation. Each task in a project is represented by a hor…
A well-known visualization for Project Management is a _________________________, which is great for illustrating the duration of a task or an operation. Each task in a project is represented by a horizontal bar with a start date and end date. Tasks are represented along the vertical axis, and dates are represented along the horizontal axis. Gantt chart Bullet graph Stacked bar chart Line chart Pie chart