Database Systems: Design, Implementation, & Management
11th Edition
ISBN: 9781285196145
Author: Steven, Steven Morris, Carlos Coronel, Carlos, Coronel, Carlos; Morris, Carlos Coronel and Steven Morris, Carlos Coronel; Steven Morris, Steven Morris; Carlos Coronel
Publisher: Cengage Learning
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Chapter 10, Problem 3RQ
Explanation of Solution
Explanation of given scenario:
- The DBMS (
Database management systems) is an application used to implement database commands given by the user. - The DBMS application checks the commands are syntactically correct or not and then execute the query in logical manner.
- Hence, the DBMS command not gives the guarantee that the semantic meaning of transaction truly represents the real-world event.
Possible consequences of limitation:
- DBMS cannot guarantee for transaction represents in real-world event...
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What is a stable database state, and how is it achieved?The DBMS gives no guarantee that the symbolic notion of the transaction appropriately matches the underlying real-world event.What are the possible consequences of the restriction? Please provide an example. What exactly is meant by "serializable transactions"?
Is a stable database state possible, and if so, how can it be achieved? There is no guarantee that the transaction's symbolic meaning accurately captures the underlying real-world event, and this is where the DBMS fails. Exactly what are the ramifications of such a ban? Give an illustration of what you mean. Does the term "serializable transactions" really mean what it appears to?
What does it mean to have a stable database state, and how does one achieve it? The DBMS gives no guarantee that the symbolic meaning of the transaction appropriately represents the underlying real-world event. What are the consequences of such a restriction? Describe an example. What exactly is meant by "serializable transactions"?
Chapter 10 Solutions
Database Systems: Design, Implementation, & Management
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- What does it mean for a database to be in a stable state? While the database management system may give a symbolic meaning for a transaction, there is no assurance that it faithfully captures the underlying real-world event. What consequences may be expected if this ban were implemented? Explain your point using an illustration. Should we take at face value the apparent meaning of the phrase "serializable transactions"?arrow_forwardWhat is a consistent database state, and how is it achieved? Â Â The DBMS does not guarantee that the semantic meaning of the transaction truly represents the real-world event. What are the possible consequences of that limitation? Give an example. Â Â What does serializability of transactions mean?arrow_forwardWhat does a stable database state include, and how is it attained? The DBMS does not ensure that the transaction's symbolic meaning accurately reflects the underlying real-world event. What effects might such a limitation have? Give an instance. What does the term "serializable transactions" really mean?arrow_forward
- What does it mean for a database to be in a stable state? The database management system does not ensure that the transaction's symbolic meaning appropriately reflects the underlying real-world event. What would be the repercussions of such a ban? Using a concrete illustration, clarify your meaning. Does the word "serializable transactions" imply what it seems to mean?arrow_forwardHow does two-phase locking ensure serializability in a multi-transaction environment? Provide a step-by-step explanation.arrow_forwardWhat is a stable database state, and how do you get one? There is no assurance that the database management system's representation of the transaction's underlying actual occurrence corresponds to its symbolic meaning. What consequences would such a restriction have? Give an example to illustrate what you mean. Does "serializable transactions" imply what it seems to mean?arrow_forward
- What does it mean for a database to have a stable state? There is no guarantee that the transaction's symbolic meaning accurately represents the underlying real-world event as provided by the database management system. What would be the effects of this restriction? Give a specific illustration of what you mean. Does the term "serializable transactions" really imply what it seems to mean?arrow_forwardWhat is a stable database state? The transaction's symbolic meaning may not match the database management system's real-world occurrence. What would a ban mean? Provide an example to clarify. Is "serializable transactions" what it seems?arrow_forwardWhat is the motivation for splitting a long transaction into a series of small ones? What problems could arise as a result, and how can these problems be averted?arrow_forward
- Why is the "two-phase locking" protocol significant in ensuring transaction consistency?arrow_forwardAn answer to the question "what does it mean for the database to have a stable state?" The database management system makes no guarantee that the symbolic meaning of the transaction accurately represents the underlying real-world occurrence. Is it possible to predict the effects of such a prohibition on culture at large? Give an example to help others understand what you mean. When Someone Uses the Term "Serializable Transactions," Do They Actually Mean What They Say?arrow_forwardWhat does it mean for a database to be in a steady state? No assurance is offered by the database management system that the symbolic meaning of a transaction corresponds to the actual event being represented. If this ban were put into effect, what effects would it have? Define your terms by providing an illustration of the concept you're referring to. Just exactly is meant by the phrase "serializable transactions"?arrow_forward
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