Problem: Database:

A database built with one DBMS is not portable to another DBMS (i.e., the other DBMS cannot run it). However, in some situations it is desirable to move, migrate a database from one DBMS to another. The reasons are primarily economical (different DBMSs may have different total costs of ownership or TCOs), functional, and operational (different DBMSs may have different capabilities). The migration involves the database's transformation from one DBMS type to another. The transformation should maintain (if possible) the database related application (i.e., all related application programs) intact. Thus, the database's conceptual and external architectural levels should be maintained in the transformation. It may be desired that also some aspects of the architecture internal level are maintained. A complex or large database migration may be a complicated and costly (one-time) project by itself, which should be factored into the decision to migrate. This in spite of the fact that tools may exist to help migration between specific DBMSs. Typically a DBMS vendor provides tools to help importing databases from other popular DBMSs.

How can a DBMS database migration be made easier?
---
A: vendor provides tools


Problem: Mexico City, being the seat of the powers of the Union, did not belong to any particular state but to all. Therefore, it was the president, representing the federation, who used to designate the head of government of the Federal District, a position which is sometimes presented outside Mexico as the "Mayor" of Mexico City.[citation needed] In the 1980s, given the dramatic increase in population of the previous decades, the inherent political inconsistencies of the system, as well as the dissatisfaction with the inadequate response of the federal government after the 1985 earthquake, residents began to request political and administrative autonomy to manage their local affairs.[citation needed] Some political groups even proposed that the Federal District be converted into the 32nd state of the federation.
What state does Mexico City belong to?
---
Answer: all


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
During April, Fourteenth Army advanced 300 miles (480 km) south towards Rangoon, the capital and principal port of Burma, but was delayed by Japanese rearguards 40 miles (64 km) north of Rangoon at the end of the month. Slim feared that the Japanese would defend Rangoon house-to-house during the monsoon, placing his army in a disastrous supply situation, and in March he had asked that a plan to capture Rangoon by an amphibious force, Operation Dracula, which had been abandoned earlier, be reinstated. Dracula was launched on 1 May, but Rangoon was found to have been abandoned. The troops which occupied Rangoon linked up with Fourteenth Army five days later, securing the Allies' lines of communication.
What was the principle port of Burma?
A: Rangoon


Context and question: Greece is classified as an advanced, high-income economy, and was a founding member of the Organisation for Economic Co-operation and Development (OECD) and of the Organization of the Black Sea Economic Cooperation (BSEC). The country joined what is now the European Union in 1981. In 2001 Greece adopted the euro as its currency, replacing the Greek drachma at an exchange rate of 340.75 drachmae per euro. Greece is a member of the International Monetary Fund and of the World Trade Organization, and ranked 34th on Ernst & Young's Globalization Index 2011.
When did Greece remove the Euro as its currency?
Answer: unanswerable


Question: Salyut 1's orbit was increased to prevent premature reentry, but further piloted flights were delayed while the Soyuz was redesigned to fix the new safety problem. The station re-entered the Earth's atmosphere on October 11, after 175 days in orbit. The USSR attempted to launch a second Salyut-class station designated Durable Orbital Station-2 (DOS-2) on July 29, 1972, but a rocket failure caused it to fail to achieve orbit. After the DOS-2 failure, the USSR attempted to launch four more Salyut-class stations through 1975, with another failure due to an explosion of the final rocket stage, which punctured the station with shrapnel so that it wouldn't hold pressure. While all of the Salyuts were presented to the public as non-military scientific laboratories, some of them were actually covers for the military Almaz reconnaissance stations.
Is there an answer to this question: How long did the station, Salyut 1, stay in orbit?

Answer: 175 days


In 1904, a British expedition to Tibet, spurred in part by a fear that Russia was extending its power into Tibet as part of The Great Game, invaded the country, hoping that negotiations with the 13th Dalai Lama would be more effective than with Chinese representatives. When the British-led invasion reached Tibet on December 12, 1903, an armed confrontation with the ethnic Tibetans resulted in the Massacre of Chumik Shenko, which resulted in 600 fatalities amongst the Tibetan forces, compared to only 12 on the British side. Afterwards, in 1904 Francis Younghusband imposed a treaty known as the Treaty of Lhasa, which was subsequently repudiated and was succeeded by a 1906 treaty signed between Britain and China.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): Who invaded Tibet in 1940?
Ah, so..
unanswerable