what circumstances would it be reasonable to assume that two select statements from the same database are consistent with one another?
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Under what circumstances would it be reasonable to assume that two select statements from the same
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- When it comes to union, just where does it make the most sense to make the argument that two select statements drawn from the same database are consistent with one another?In what kind of situation would it make sense to make the assumption that two select statements taken from the same database are consistent with one another?Another action may be triggered by the execution of a trigger. There is often a limit on how deep nesting may go in database systems. Why could they impose such a restriction?
- In what circumstances does it make sense to assume that two select statements from the same database are consistent with one another?For the following database scheme Employee(empNo,fName.IName.address.DOB.sex,position.deptNo) Department(deptNo.deptName,mgrEmpNo) Project(projNo.projName,deptNo) WorksOn(empNo.projNo.dateWorked,hoursWorked) Write an SQL statement to find all the details of employees who are femalePLZ HELP WITH THE FOLLOWING: We will assume that the Computer Science Department at a university has an agreement with the publishers to allow faculty and students to have free exclusive access to the e-books online through their website. They need you to design a database for them using the following business rules: The faculty and students (we refer to them in our system as clients) can electronically check out any book at any time. A book must have at least one author but can have more authors. An author must have written at least one book or more to be included in the system. A book may have never been checked out, but can be checked out many times by the same client or different clients over time. A client may have never checked out a book or they may have checked out many books over time. To simplify determining which client currently has a given book checked out, a M:N relationship between BOOK and CLIENT should be maintained. The information recorded for each book is book…
- Can you think of scenarios in which using default values will improve data integrity as well as conditions in which doing so would damage it?Do we consider NULL values the same as that of blank space or zero in databases?The execution of a trigger can cause another action to be triggered. Most database systems place a limit on how deep the nesting can be. Explain why they might place such a limit.
- using php We run a dog grooming shop, there are new 4 breeds that are being registered to our system. Please add their names, breeds, and ages to the database, also display the new inputs with non-prepared statements Requirement 1: Require the programmer to insert rows Requirement 2: Require the programmer to display the rows after they have been changed Requirement 3: Require use of a non-prepared statementA trigger's execution might result in the execution of another action. The depth of nesting in most database systems has a limit. Explain why they would put such a restriction in place.Access path A database table is composed of records and fields hold data. Data is stored in records. A field is a part of a record and contains a single piece of data for the subject of the record. The access path for finding the list of books is AUTHOR: AuthorID, Lname BOOKAUTHOR: AuthorID, ISBN BOOKS: Pubdate, ISBN