. How is a simple view different from a complex view? 2. Under what circumstances is...
. How is a simple view different from a complex view?
2. Under what circumstances is a DML operation not allowed on a simple view?
3. When should the FORCE keyword be used in the CREATE VIEW command?
7. What’s the difference between a key-preserved and a non-key-preserved table?
8. What command can be used to modify a view?
Homework Answers
Add Answer to:
. How is a simple view different from a complex view?
2. Under what circumstances is...
Prompt 1: Provide an example, real or imagined, and describe under what circumstances a hypothesis test...
Prompt 1: Provide an example, real or imagined, and describe under what circumstances a hypothesis test for the difference between two means or two proportions can be conducted. Include what significance level should be used based on the seriousness of a Type I error for your test; and identify possible confounding variables that may skew the results.
Parametric Modeling with Autodesk Inventor 11-36 Review Questions: (Time: 25 minutes) 1. List the different symmetrical features created in the Pulley design What are the advantages of using a dr...
Parametric Modeling with Autodesk Inventor 11-36 Review Questions: (Time: 25 minutes) 1. List the different symmetrical features created in the Pulley design What are the advantages of using a drawing template? 2. Describe the steps required in using the Mirror Feature command. 3. 4. Why is it important to identify symmetrical features in designs? When and why should we use the Pattern option? 5. What are the required elements in order to generate a sectional view? 6. 7. How do...
“awk” can be used to process simple tables. Given a table below: npu29:yinglir>cat table.txt 1 2...
“awk” can be used to process simple tables. Given a table below: npu29:yinglir>cat table.txt 1 2 3 2 3 4 5 6 7 3 6 9 2 3 4 3 4 1 The simple command below can be used to filter the table: npu29:yinglir>cat table.txt | awk ' { if (($3 >= 3) && ($3 <= 4)) print $0 } ' 1 2 3 2 3 4 2 3 4 You can also write a simple c-shell script as below....
Question 2 a. Under what circumstances at tender preparation stage, the provisional quantities and provisional sum...
Question 2 a. Under what circumstances at tender preparation stage, the provisional quantities and provisional sum shall be allowed in bills of quantities, instead of the firm quantities? Please describe respectively. [10 marks] 6. Calculate the steel to concrete ratio (kg/m) for the beam based on the following information Elements Concrete voluine (ln) Steel to concrete ratio (kg/m3) Column 6,000 250 Slab 12,000 150 Beam 10,000 Structural wall 6,000 200 Non-structural wall 1,000 80 Staircase 1,000 100 Total provisional quantities...
4. Write SQL data definition commands for each of the following queries: a. How would you add an attribute, Class, to the Student table? b. How would you remove the Registration table? c. How would you change the FacultyName field from 25 characters
Problems and Exercises 1 through 9 are based on the dass scheduling
3NF relations along with some sample data shown in Figure 6-11.
Not shown in this figure are data for an ASSIGNMENT relation,
which represents a many-to-many relationship between faculty and
sections.4. Write SQL data definition commands for each of the following queries:a. How would you add an attribute, Class, to the Student
table?b. How would you remove the Registration table?c. How would you change the FacultyName field from...
SQL Question 2 Using your table from question 1: Create a minimum of 4 INSERTS. On...
SQL Question 2
Using your table from question 1:
Create a minimum of 4 INSERTS.
On one of your INSERTs, do not specify all of your columns. In
other words, if you have 5 columns in your table, only mention 4 or
less columns in one of your INSERTs.
Be sure to write a comment above the INSERT with less columns
and explain what is missing in a full English sentence.
You should write a simple SELECT after your INSERTs...
1.How does Keynes differ in his view on Say’s Law from the classical economists? 2.What is...
1.How does Keynes differ in his view on Say’s Law from the classical economists? 2.What is the difference between an open economy and a closed economy? 3.True or False Consumption is the smallest part of TE. 4.Our economy is at a decrease of $400 billion dollars from our natural real GDP. What is the state of the economy? What does Keynesian economist believe should be done? The government increases its spending $70 billion dollars. At the same time, consumption decreases...
do numbers 4-8 4. Given any directory, use the Is command to display: • all files...
do numbers 4-8
4. Given any directory, use the Is command to display: • all files and sub-directories starting with the letter "D" (note do not list anything in any sub-directory) • its immediate sub-directories (sub-directories only, and no other ordinary files) its immediate hidden sub-directories only - take a screenshot (#3-3) that clearly shows the command and the result. 5. Assume that the following files are in the working directory: $ ls intro notesb ref2 section 1 section3 section4b...
QUESTION 1 What is the most common relationship within a relational database? Select the best answer...
QUESTION 1 What is the most common relationship within a relational database? Select the best answer from the following. One-To-One relationship. o One-To-Many relationship. Many-To-Many relationship. Zero-To-Zero relationship. QUESTION 2 What is an "entity'? Select the best answer from the following. An entity, for our purposes, is the same as a table in the database. An entity represents one of the columns in an individual table. There are no entities in a relational database. Entities are only part of NoSQL...
The accompanying table lists body temperatures from 68 different randomly selected subjects measured at two different...
The accompanying table lists body temperatures from 68 different randomly selected subjects measured at two different times in a day. Assume that the paired sample data are simple random samples and the differences have a distribution that is approximately normal. Complete parts (a) and (b) below. Click the icon to view the data on body temperatures. a. Use a 0.05 significance level to test the claim that there is no difference between body temperatures measured at 8 AM and at...
Parametric Modeling with Autodesk Inventor 11-36 Review Questions: (Time: 25 minutes) 1. List the different symmetrical features created in the Pulley design What are the advantages of using a drawing template? 2. Describe the steps required in using the Mirror Feature command. 3. 4. Why is it important to identify symmetrical features in designs? When and why should we use the Pattern option? 5. What are the required elements in order to generate a sectional view? 6. 7. How do...
Question 2 a. Under what circumstances at tender preparation stage, the provisional quantities and provisional sum shall be allowed in bills of quantities, instead of the firm quantities? Please describe respectively. [10 marks] 6. Calculate the steel to concrete ratio (kg/m) for the beam based on the following information Elements Concrete voluine (ln) Steel to concrete ratio (kg/m3) Column 6,000 250 Slab 12,000 150 Beam 10,000 Structural wall 6,000 200 Non-structural wall 1,000 80 Staircase 1,000 100 Total provisional quantities...
SQL Question 2
Using your table from question 1:
Create a minimum of 4 INSERTS.
On one of your INSERTs, do not specify all of your columns. In
other words, if you have 5 columns in your table, only mention 4 or
less columns in one of your INSERTs.
Be sure to write a comment above the INSERT with less columns
and explain what is missing in a full English sentence.
You should write a simple SELECT after your INSERTs...
do numbers 4-8
4. Given any directory, use the Is command to display: • all files and sub-directories starting with the letter "D" (note do not list anything in any sub-directory) • its immediate sub-directories (sub-directories only, and no other ordinary files) its immediate hidden sub-directories only - take a screenshot (#3-3) that clearly shows the command and the result. 5. Assume that the following files are in the working directory: $ ls intro notesb ref2 section 1 section3 section4b...
QUESTION 1 What is the most common relationship within a relational database? Select the best answer from the following. One-To-One relationship. o One-To-Many relationship. Many-To-Many relationship. Zero-To-Zero relationship. QUESTION 2 What is an "entity'? Select the best answer from the following. An entity, for our purposes, is the same as a table in the database. An entity represents one of the columns in an individual table. There are no entities in a relational database. Entities are only part of NoSQL...
The accompanying table lists body temperatures from 68 different randomly selected subjects measured at two different times in a day. Assume that the paired sample data are simple random samples and the differences have a distribution that is approximately normal. Complete parts (a) and (b) below. Click the icon to view the data on body temperatures. a. Use a 0.05 significance level to test the claim that there is no difference between body temperatures measured at 8 AM and at...
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