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- 2. Get the Groups As new students begin to arrive at college, each receives a unique ID number, 1 to n. Initially, the students do not know one another, and each has a different circle of friends. As the semester progresses, other groups of friends begin to form randomly. There will be three arrays, each aligned by an index. The first array will contain a queryType which will be either Friend or Total. The next two arrays, students1 and students2, will each contain a student ID. If the query type is Friend, the two students become friends. If the query type is Total, report the sum of the sizes of each group of friends for the two students.Ex: Find the intersection of FA2 and FA3. Generate the RE. Why the table is wrong I tried to do the according to the given example. What did I do wrong?Construct right T. table please
- Consider tables S (A, B, C) and T (B, C, D) and SQL query select A, B, C, D from S, T where S.B = T.B and S.C = T.C Design a MapReduce program to compute the join efficiently. Please provide the pseudocode.Re-write the following LINQ query using a lambda expression. Display your result on Console. int[] array = {8,2,2,24,5,7,5,3,2,10 }; var myQuery = from element in array where element < 5 orderby element select element;SQL: Create a SQL query that uses an uncorrelated subquery and no joins to display the descriptions for products provided by a vendor in area code 615. Remember, the main difference between a correlated subquery and uncorrelated subquery is that, in a correlated subquery, the inner query is dependent upon the outer query, while, with an uncorrelated query, the inner query does not depend upon the outer query. Instead, it runs just once. You should NOT use union, minus, or intersect in this query. The outer query will use the PRODUCT table and the inner query will use the VENDOR table [hint: you should have 9 records of output]. My code: select p_descript from product where (select v_areacode from vendor where v_areacode = '615' ; I am getting this error, problem is I can't see what is missing any assistance is appreciated. ORA-00936: missing expression
- What is the difference between the RANK() and DENSE _RANK() functions? Provide an example.Suppose a qüery sumServ sums the quantities in the CustomerBillitem table and a query sumWaste sums the quantities in the FoodWaste table. For the purpose of summing the quantities in sumServ and sumWaste, the following query design needs: sumserv sunWaste Storeio Storeib FoodiD Foodio Sumoruantity SumorQuantity sen wastew 1) No join from servWk to wasteWk 2) A left outer join on FoodiD 31 Left outer joins on StorelD and FoodID 4) All left outer joinsFinding a Key in a Dictionary If you would like to find out whether a certain key exists within a dictionary, use the vaalue in dictionary_name.keys() syntax. If the value is in fact a key in the dictionary, True will be returned. If it is not, then False will be returned.
- Write program to Basic regex_match and regex_search Examples?Let the document be “good bad student good bad instructor” and the query be “good student”. Fill out the empty columns in the following table and then compute the cosine similarity between the document vector and the query vector. In the table, df denotes document frequency, idf denotes inverse document frequency (i.e., idft = log10N/dft), tf denotes term frequency, log tf denotes the tf weight based on log-frequency weighting as shown in slides (i.e., 1+log10tft,d for tft,d> 0 and 0 otherwise), d is the document vector, d’ is the length-normalized d, q is the query vector, and q’ is the length-normalized q. Assume N (number of documents in the corpus) = 10,000,000.10. Create a B-tree index on the customer’s Lastname column. Verify that the index exists byquerying the data dictionary. Remove the index from the database
