
Concept explainers
SELECT statement:
It is used to retrieve information from the table or
Syntax:
SELECT * FROM table_Name;
“Round()” function:
This function is used to round a number that specified in decimal places. The format of the “Round()” function is as follows:
Syntax:
ROUND(number, decimal_places)
AVG function:
- • It is one function of the aggregate function.
- • This function is used to get the average of all the values from the column.
- • Syntax: SELECT AVG(column_Name) FROM table_Name;
INNER JOIN keyword:
“INNER JOIN” keyword is used to select all the matching records of both the table.
Syntax:
SELECT col_Name FROM table_Name1 INNER JOIN table_Name2 ON table_Name1.col_Name = table_Name2.col_Name;
“GROUP BY” Clause:
The GROUP BY clause is used to group the result of a SELECT statement completed on a table where the values of tuple are identical for more than one column.
Syntax:
SELECT expression1, expression2, expression_n, aggregate_function (expression)FROM table_name WHERE conditions GROUP BY expression1, expression2, expression_n;
ORDER BY Clause:
SQL contains “ORDER BY” clause in order to sort rows. The values get sorted in ascending as well as descending order. The keyword used to sort values in ascending order is “ASC” and for descending order is “DESC”. By default, it sorts values by ascending order.
Syntax:
SELECT column_Name1, column_Name2 FROM table_Name ORDER BY column_Name2;

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Chapter 8 Solutions
EBK DATABASE SYSTEMS: DESIGN, IMPLEMENT
- Could you help me to know features of the following concepts: - commercial CA - memory integrity - WMI filterarrow_forwardBriefly describe the issues involved in using ATM technology in Local Area Networksarrow_forwardFor this question you will perform two levels of quicksort on an array containing these numbers: 59 41 61 73 43 57 50 13 96 88 42 77 27 95 32 89 In the first blank, enter the array contents after the top level partition. In the second blank, enter the array contents after one more partition of the left-hand subarray resulting from the first partition. In the third blank, enter the array contents after one more partition of the right-hand subarray resulting from the first partition. Print the numbers with a single space between them. Use the algorithm we covered in class, in which the first element of the subarray is the partition value. Question 1 options: Blank # 1 Blank # 2 Blank # 3arrow_forward
- 1. Transform the E-R diagram into a set of relations. Country_of Agent ID Agent H Holds Is_Reponsible_for Consignment Number $ Value May Contain Consignment Transports Container Destination Ф R Goes Off Container Number Size Vessel Voyage Registry Vessel ID Voyage_ID Tonnagearrow_forwardI want to solve 13.2 using matlab please helparrow_forwarda) Show a possible trace of the OSPF algorithm for computing the routing table in Router 2 forthis network.b) Show the messages used by RIP to compute routing tables.arrow_forward
- using r language to answer question 4 Question 4: Obtain a 95% standard normal bootstrap confidence interval, a 95% basic bootstrap confidence interval, and a percentile confidence interval for the ρb12 in Question 3.arrow_forwardusing r language to answer question 4. Question 4: Obtain a 95% standard normal bootstrap confidence interval, a 95% basic bootstrap confidence interval, and a percentile confidence interval for the ρb12 in Question 3.arrow_forwardusing r languagearrow_forward
- using r languagearrow_forwardusing r language Obtain a bootstrap t confidence interval estimate for the correlation statistic in Example 8.2 (law data in bootstrap).arrow_forwardusing r language Compute a jackknife estimate of the bias and the standard error of the correlation statistic in Example 8.2.arrow_forward
- Database Systems: Design, Implementation, & Manag...Computer ScienceISBN:9781305627482Author:Carlos Coronel, Steven MorrisPublisher:Cengage LearningA Guide to SQLComputer ScienceISBN:9781111527273Author:Philip J. PrattPublisher:Course Technology Ptr

