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Let T1 have the operations r(x); w(x); r(y); w(y) and T2 have the operations r(x); w(x). Consider adding either a commit or abort to each of the transactions T1 and T2 and consider the different possible concurrent (not serial) schedules. From among these dierent possible concurrent schedules (with either a commit or abort added), give examples of:
(a) A schedule which is non-recoverable.(b) A schedule which is recoverable but is not strict.(c) A schedule which is strict, but not serial. Note that you are free to add either a commit or an abort to T1 and either a commit or an abort to T2 for each of the above problems i.e. in one you may decide to add commits to both T1 and T2, in another an abort to T1 but a commit to T2 etc.
you were hired as an analyst to develop a new information system to automate the payroll transactions in a mid-size
Construct a relational schema for the ER-diagram. Make sure that you correctly translate Specialization and Many-to-Many relationships. Please follow carefully the following guidelines when you ?nish this question.
1 . create a new database named membership.2. write the create table statements needed to implement the following
Prepare a report that identifies the five most expensive bicycles. The report should list the bicycles in descending order from most expensive to lsit expensive, the quantity on hand for each, and the mark up percentage for each.
In order to move forward, the local university will need to develop a data model that will retain student records and perform various data extract transform and load (ETL) processes.
Create the DigitalX database. Design tables and relationships and ensure that email addresses may only be used once in the database.
Consider a student club or organization in which you are a member. What are the data entities of this enterprise? List and define each entity
if those were for me wed keep them all in two to three minutes longer he says. but thats not my call-its the
To analyse and comprehend a provided ER diagram and Database Schema and implement a database based on the provided ER diagram and Database Schema
how can you drop a table from your database that has one or more other tables referencing it with foreign keys?no words
Need a page and half on concept of organizational intelligence. It must specifically talk about organizational intellignece being outcome of organization's efforts to gather store, process and interpret data.
List the different entities or objects, logical processes, data flows, and data stores that are involved, starting from the time you submitted your time sheet.
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